A metronome is any device that produces regular, metrical ticks (beats, clicks) — settable in beats per minute. These ticks represent a fixed, regular aural pulse; some metronomes also include synchronized visual motion (e.g. pendulum-swing). The metronome dates from the early 19th century, where it was patented by Johann Maelzel in 1815 as a tool for musicians, under the title "Instrument/Machine for the Improvement of all Musical Performance, called Metronome".
The metronome is used by musicians to help keep a steady tempo as they play, or to work on issues of irregular timing, or to help internalize a clear sense of timing and tempo. The metronome is also often used by composers as a standard tempo reference, to indicate the intended tempo for the piece.
Human beings seldom play music at an exact tempo with all the beats exactly the same. This makes it impossible to align metronome clicks with the beats of a musically expressive performance. This also has led many musicians to criticize use of a metronome. Some go as far as to suggest that metronomes shouldn't be used by musicians at all. The same criticism has been applied to metronome markings as well. See Criticism of metronome use.
Those in favour of metronome use understand this as a criticism of metronome technique as commonly practised by musicians, rather than criticism of the tool as such. Their response has been to develop better methods of metronome technique to address the various issues raised by the critics. See Metronome Technique. These techniques however aren't widely known by musicians generally, including many of the critics of metronome use. What Frederick Franz wrote in the introduction to his book is still true today (the original version was published in 1947). Metronome technique has developed considerably since his day, but the amount published is still small. As in his day, it is understandable that critics should be under the impression that metronome technique simply consists of playing your music along with the metronome.
There are two schools of thought among musicians concerning this use of the metronome—one opposed and the other favorable. "Practicing with a metronome" has been criticized by some musicians as "making you mechanical." In some instances such criticism is largely a prejudice, the critic having gained the impression that one starts a metronome and simply continues playing with it indefinitely. In most instances, however, such criticism is excusable since so little has been published on specific techniques of metronome uses. It is hoped that those who oppose its use for learning and improving the control of rhythm will read with tolerance these methods, employed by those who favor it, and perhaps investigate their value by experimenting with one or two of them in their own teaching or preparation for concerts.
The word metronome first appeared in English c.1815  and is Greek in origin:
metron = measure, nomos = regulating=law
Galileo Galilei first studied and discovered concepts involving the pendulum in the late 16th and early 17th centuries. In 1696, Etienne Loulié first successfully used an adjustable pendulum in the construction of the first mechanical metronome; however, his design did not produce any sound and did not include an escapement with which to keep the pendulum in motion. In order to get the correct pulse with this kind of visual devices, one needs to watch the precise moment where the pendulum is exactly vertical, as the left and right positions are constantly changing due to the decreasing amplitude.
The more familiar mechanical musical chronometer was invented by Dietrich Nikolaus Winkel in Amsterdam in 1814. Through questionable practice, Johann Maelzel, incorporating Winkel's ideas, added a scale, called it metronome and started manufacturing the metronome under his own name in 1816: "Maelzel's Metronome." The original text of Maelzel's patent in England (1815) can be downloaded.
Metronomes may be used by musicians when practicing in order to maintain a constant tempo; by adjusting the metronome, facility can be achieved at varying tempi. Even in pieces that do not require a strictly constant tempo (such as in the case of rubato), a metronome "marking" is sometimes given by the composer to give an indication of the general tempo intended, found in the score at the beginning of a piece or movement thereof.
Tempo is almost always measured in beats per minute (BPM); metronomes can be set to variable tempi, usually ranging from 40 to 208 BPM; another marking denoting metronome tempi is M.M. (or MM), or Mälzel's Metronome. The notation M.M. is often followed by a numeric value indicating the tempo, as in M.M. = 60.
More specific uses are given below:
- Learning consistency of tempo and rhythmic beats
- Practicing technique (during drills: setting the metronome progressively to higher speeds; or during performance: exposing slow-downs due to technical difficulties)
- Sheetmusic often has metronome-markings, that show the speed at which the work should be played
- Click tracks: Musicians can separately play the different parts of a work, according to a synchronized click-track (using headphones); and audio-engineers then mix the tracks together, synchronizing the parts at the clicks.
- Backing tracks are often created with electronic synthesisers and inherently adhere to strict beats
Standard appearance 
The following numbers are customarily designated as "metronome markings" on metronomes and on musical scores:
- 40 42 44 46 48 50 52 54 56 58 60 63 66 69 72 76 80 84 88 92 96 100 104 108 112 116 120 126 132 138 144 152 160 168 176 184 192 200 208 
Types of metronomes 
|Problems listening to this file? See media help.|
|Problems listening to this file? See media help.|
Mechanical metronomes 
One common type of metronome is the mechanical metronome which uses an adjustable weight on the end of an inverted pendulum rod to control the tempo: The weight is slid up the pendulum rod to decrease tempo, or down to increase tempo. (The mechanism is also known as a double-weighted pendulum. There is a second, fixed weight on the other side of the pendulum pivot, hidden in the metronome case.) The pendulum swings back and forth in tempo, while a mechanism inside the metronome produce a clicking sound with each oscillation.
Electronic metronomes 
Most modern metronomes are electronic and use a quartz crystal to maintain accuracy, comparable to those used in wristwatches. The simplest electronic metronomes have a dial or buttons to control the tempo; some also produce tuning notes, usually around the range of A440 (440 hertz). Sophisticated metronomes can produce two or more distinct sounds. Tones can differ in pitch, volume, and/or timbre to demarcate downbeats from other beats, as well as compound and complex time signatures. A popular quartz metronome manufacturer is Seiko.
Many electronic musical keyboards have built-in metronome functions.
Software metronomes 
Metronomes now exist in software form, either as stand alone applications or often in music sequencing and audio multitrack software packages. In recording studio applications, such as film scoring, a software metronome is often used to generate a click track to synchronize musicians.
Metronome Tracks / Click Tracks 
These days with the growing popularity of iPod and other portable mp3 players, musicians now have the option of using mp3 metronome click tracks instead of a regular metronome. Metronome tracks are a lot more flexible in that they can be made by the musician and can use different sounds and samples instead of just the regular metronome beep. It also means musicians no longer have to carry an additional metronome along to lessons or practice sessions. There are a number of free open-source software programs musicians can use to create their own mp3 metronome tracks – Audacity is one example of such a program. 
Sine Metronome 
On 23/05/2007 Josan Aramayo patented the metronome system based on the movement of an oscillatory motion of a ball, (200701544/ES2332342) traslating to the software programme the result of his research in the Thesis "The Upbeat". After studying the oscillatory motion in conducting technique of Celibidache collected in The Upbeat, created a simulator of conducting "The sine metronome sphaira" like a metronome, with the programmers Jon Unibaso (2008–2009) Vanessa Gomez (2010–2012) and Oscar Fernández (2012- ) creating the first oscillatory motion of a ball, metronome.
Use of the metronome as an instrument 
The clicking sounds of mechanical metronomes have sometimes been used to provide a soft rhythm track without using any percussion. Paul McCartney did this twice:Once on "Blackbird" in 1968 & once in 1989 on "Distractions" (Flowers in the Dirt), where McCartney, following the metronome's regular beat, performed the whole rhythm track by hitting various parts of his own body. Also, in Ennio Morricone's theme "Farewell to Cheyenne" (featured on Once Upon a Time in the West), the steady clip-clop beat is provided by the deliberately distorted and slowed-down sound of a mechanical metronome.
Views on the metronome 
Positive view of the metronome 
In the 20th century the metronome is usually positively viewed by performers, musicologists (who spend considerable time analyzing metronome markings), teachers and conservatories. The common view is reflected in the following quote:
Because its beat is perfectly steady, the metronome is an excellent practice tool for musicians. Practicing with a metronome is extremely useful for developing and maintaining rhythmic precision, for learning to keep consistent tempos, for countering tendencies to slow down or speed up in specific passages, and for developing evenness and accuracy in rapid passages. Most music teachers consider the metronome indispensable, and most professional musicians, in fact, continue to practice with a metronome throughout their careers.—The NPR Classical Music Companion (2005) 
Often, the metronome by itself may not be enough to learn complex rhythms. However, its importance for all types of practicing and all genres cannot be understated. The infallibility of the machine is a blessing since it removes guesswork; thus, the player can use the metronome to learn to play evenly and to resist the temptation to take extra time when playing a difficult passage. The player must begin with the premise that the metronome is mathematically perfect and categorically correct. From there, s/he must make a personal commitment to play exactly together with this perfect "chamber music partner."—A Practical Guide To Twentieth-Century Violin Etudes With Performance And Theoretical Analysis. Doctoral thesis (2004) by Aaron M. Farrell
Metronomes are often recommended to students without reservation:
Before a student can be persuaded to use a metronome, he or she has to know why it is important. The most obvious answer is to help keep rhythms even and clean. Another reason is to keep the meter consistent, placing beats in their proper positions in the music. Metronomes can also help a student to find and fix problems. [...] The metronome quickly alerts the player to these problems by suddenly not clicking in time with the player’s beats.—"Make the Metronome Your Friend" by Professor Dr. Steven Mauk
The objection, sometimes heard, that using a metronome tends to make a player mechanical, is not founded on facts. Indeed, the students who play the most artistically are those who have been the most faithful in the use of their metronome when learning their pieces.—Josephine Menuez, Etude, April, 1932
Numerous other quotations in favour of the metronome, can be found in the book Metronome Techniques: Potpourri of quotations.
Metronome, strict rhythm: modern performance practice 
The quotations above show the importance of the metronome in the 20th century ("Most music teachers consider the metronome indispensable, and most professional musicians, in fact, continue to practice with a metronome throughout their careers").
A strict rhythmic performance can be seen as a of Modern performance practice, which – though highly prevalent today – stands in stark contrast, with earlier performance practices.
The traits that distinguish Modern style [...]: unyielding tempo, literal reading of dotting and other rhythmic details, and dissonances left unstressed. [...]
Modern style [...]: light, impersonal, mechanical, literal, correct, deliberate, consistent, metronomic, and regular. Modernists look for discipline and line, while they disparage Romantic performance for its excessive rubato, its bluster, its self-indulgent posturing, and its sentimentality. Richard Taruskin calls Modernism "refuge in order and precision, hostility to subjectivity, to the vagaries of personality." It is characterized by formal clarity, emotional detachment, order, and precision.—Bruce Haynes, The end of early music (Oxford University Press)
Modern style [...] It does not usually inflect or shape notes, [...] use agogic accent of placement, add gracing at all generously, or use rubato (tempos are metronomic and unyielding).
Sol Babitz described it as "sewing machine" style, thinking of the rigidly mechanical rhythmic approach, the four equally stressed 16ths, and the limited flexibility in tempo that often characterizes performances of historical repertoire heard in Modern style.—Bruce Haynes, The end of early music (Oxford University Press)
Modern style is the principal performing protocol presently taught in conservatories all over the world.—Bruce Haynes, The end of early music (Oxford University Press)
Musicians of a hundred years ago, hearing a cross-section of present-day classical performances, would likely be struck by this primary difference between their performance practice and ours: [...] Our performance practice [...] assumes that a predictably regular beat is conscientiously maintained throughout a movement. [...] We compensate our lack of timing flexibility by a very highly developed sense of tone-color and dynamic which, however refined and polished it may be, tends to abstract and de-personalize the music-making, underscoring its "absoluteness".
The principle of strict unity of beat within a movement has been part of our understanding and experience of classical music for so many decades now, that today's musicians and listeners can hardly imagine that less than a century ago the "standard" classical repertoire was performed under significantly different assumptions.—Robert Hill, Music and Performance During the Weimar Republic - Chapter 3: "Overcoming Romanticism": On the modernization of twentieth century performance practice
In the early 19th century the metronome was not used for ticking all through a piece, but only to check the tempo and then set it aside. This is in great contrast with many musicians today:
[...] early nineteenth century [...]. There was little interest in using the metronome to tick all the way through a piece of music. But this is how the device is used by conservatory students today.—Reflections on American music: the twentieth century and the new millennium : a collection of essays presented in honor of the College Music Society by James R. Heintze (Pendragon Press, 2000)
While this section highlights the modern trends of strict mechanical performance as something widespread in the 20th century and beyond; it is interesting to observe that as early as 1860, there were people who firmly advocated this type of "modern" performance practice:
Correct time is considered indispensable; then why not use the Metronome. Hummel has recommended it in the strongest terms. My regard for it is such, that for twenty-five years or more I never taught a pupil without it. [...] The beginner must only use the mechanical touch, for at least a couple of years. The music chosen for lessons and studies must be free from features, which require or admit expression. No crescendo, diminuendo, accelerando, ritardando, irregular accentuation, ff. pp. sfz. is admissible.—Franz Petersilea (ca. 1860)
Criticism of metronome use 
A metronome only provides a fixed, rigid, relentless pulse; therefore any metronome markings on sheet music cannot accurately communicate the pulse, swing, or groove of music: The pulse is often not regular; e.g. in accelerando, rallentando; or in musical expression as in phrasing (rubato, etc.).
Some argue that a metronomic performance stands in conflict with an expressive culturally-aware performance of music, so that a metronome is in this respect a very limited tool. Even such highly rhythmical musical forms as Samba, if performed in correct cultural style, cannot be captured with the beats of a metronome.
A style of performance that is unfailingly regular rhythmically may be criticized as being "metronomic."
... this series of even, perfectly quantized, 16th notes, is no more evocative of samba, than a metronome would be. In fact, this representation neglects what makes up the samba essence in the first place — the swing!—Understanding the Samba Groove by Pedro Batista
The metronome has no real musical value. I repeat, the metronome has no value whatsoever as an aid to any action or performance that is musical in intention. [...] refer by analogy to the sister art of drawing. Graphic artists understand well enough the essential and generic difference that exists between mechanically-aided drawing on the one hand and freehand on the other. Similarly, musicians ought to distinguish between (1) the sort of timing that results from dull, slavish obedience to the ticking of a soulless machine, and (2) that noble swing and perfect control of pulsation which comes into our playing after years of practice in treating and training the sense of time as a free, creative human faculty.—The Amateur String Quartet by James Brown III
[...] using the metronome as a constant guide to ramp up the speed or to keep the rhythm. This is one of the worst abuses of the metronome. [...] If over used, it can lead to loss of your internal rhythm, loss of musicality, and bio-physical difficulties from over-exposure to rigid repetition—Fundamentals of Piano Practice by Chuan C. Chang
A good performance is so full of these minute retardations and accelerations that hardly two measures will occupy exactly the same time. It is notorious that to play with the metronome is to play mechanically - the reason being, of course, that we are then playing by the measure, or rather by the beat, instead of by the phrase. A keen musical instinct revolts at playing even a single measure with the metronome: mathematical exactitude gives us a dead body in place of the living musical organism with its ebb and flow of rhythmical energy. It may therefore be suggested, in conclusion, that the use of the metronome, even to determine the average rate of speed, is dangerous.
What is musical rhythm? Perhaps it is the difference between a performance that is stiff and metronomic in its strict adherence to the beat, and a performance that flows with elasticity and flexibility that emanates from the music itself. A rhythmically musical performance seems to take its cues from stylistic considerations, tempo, phrasing, and harmonic structure, as well as form. Sometimes we may not be exactly sure what makes a piece sound rhythmically musical, but we know it when we hear it.
It should not surprise us that some children do not know instinctively how to play musically. Many youngsters are surrounded by popular music that is rigid and inflexible in its rhythm, characterized by a relentless beat that is often synthesized or computerized. Even some CDs and MIDI disks especially designed for use with piano teaching materials can encourage students to be overly metronomic in their playing. In general, our students may not be familiar with the idea of subtle nuances of tempo, and may need help understanding this.—Jennifer Merry
Numerous other quotations critical of the metronome can be found at Wikiquote: Metronome.
Metronome Technique 
Metronome technique is extensive and has been the subject of several books. So this short section just summarizes some of the main ideas and approaches. The "intuitive" approach to metronome practise, is to simply play your music along with a metronome. With metronome technique however, musicians do separate exercises with a metronome to help strengthen and steady their sense of rhythm, and tempo; and increase their sensitivity to musical time and precision. Only occasionally do you play your music with a metronome, to deal with particular issues. It is entirely possible that you never play your music with a metronome at all.
I spent the better part of this past month rereading a great book on tempo by Andrew C. Lewis, titled Rhythm: What It Is And How To Improve Your Sense Of It. The book contains dozens of exercises on how to build inner timing, most of which can be practiced without an instrument; all you need is a metronome. So every day during my commute to and from the office, I’ve been jamming out with my Korg Beatlab clipping quarter notes at 80 beats per minute while clapping, snapping, tapping, and singing myself into oblivion. You should see the looks I’ve been getting at stoplights." 
Playing in the pocket 
The basic skill required is the ability to play precisely in the pocket with the metronome in a relaxed fashion. This first step helps the musician to relate to the time of the metronome clearly and precisely at the millisecond level, to help internalize a similarly precise sense of time in yourself. It is not a goal in itself, and the aim is not particularly to be able to play like a metronome.
It is harder to play in the pocket with the metronome than one might expect, especially with piano or percussion. That's because the metronome click may seem to vanish when you hit the click exactly – or may be heard less distinctly. The further you are away from the click the more easily you hear the metronome. Musicians who attempt to play in the pocket with a metronome without use of the established techniques for doing this may find that it introduces tension and effort into their instrument technique.
To address these issues, the musicians start by learning to play consistently ahead or behind the beat whenever they want to. As a result they develop a clear sense of "where the click is" and so can also play to hit the click as well, in a relaxed way.
The other thing they do is to listen out to hear how the sound of their playing merges with the metronome to create a new sound when you play precisely in the pocket with the metronome. By listening in this way (and through other exercises) it is possible to play precisely in the pocket with the metronome in a relaxed fashion.
At the same time as they work on playing in the pocket, they also work on flexibility and the ability to play in the same precise way anywhere in the beat.
Precision of timing and sensitivity to musical time 
Many exercises are used to help with precision of timing and sensitivity to time, also independence, to make sure you don't become a slave of the metronome. These exercises include:
- Set the metronome to go silent for a number of measures, and see if you are still in time when it comes back on again
- Set it to go silent for increasingly longer time periods and see if you are still in time
- Play through music in your mind's ear, and try to do keep in time with the metronome as you do so
- Practise subdividing the beat, with the metronome set to a slow tempo, including set to click on the measure beat, every second measure, the second beat of the measure instead of the first (or the second and fourth, technique used for jazz), set to click every 5 beats for a rhythm in 4/4, and so on.
- Playing displaced clicks
- Playing polyrhythmically with the metronome
And many other exercises. Much of modern metronome technique is to do with various methods to help resolve timing issues, and to encourage and develop a clear sense of musical time and to help with precision of timing.
This steadiness and precision you can develop and encourage through metronome technique does no harm to musical expression in timing and rhythm; indeed one of the motivations is to help with nuances of timing and tempo. An analogy with art may help. It's like Giotto's circle, or Apelles' straight line, if you can play a perfectly steady and precise beat, it helps with nuances of timing., It doesn't mean that you can only play perfectly steady beats, just as Giotto or Apelles impressive displays of technique didn't mean that they could only draw circles and straight lines.
Musically expressive rhythms 
Modern metronome technique addresses the issues of expressive musical rhythms in many ways. For instance, much of the focus of modern metronome technique is on encourage and develop a good sense of tempo and timing in your playing, and in your mind. So you may work with the metronome in separate exercises to achieve this. When you have a more precise sense of the passage of time, you can then choose for yourself how to use this in your musical performance. You still play in a musically expressive fashion with continually changing tempo and beat, the only difference is that as a result of your work on precision of timing with use of a metronome, you are more aware of what you are doing.
To be an artist one must be able to play in perfect time – slow, fast, or anywhere between. Then one must be able to leave the time at will. This is not the same as having the time leave the player, and that is the effect if one is not able to play with the metronome.
Special metronome exercises are used to help keep this fluid sense of rhythm and timing as you work with the metronome. There are many of them, they include:
- Drift gradually from one beat to the next and play polyrhythmically with the metronome
- Play beats ahead or behind the click – and get comfortable with playing anywhere relative to the metronome click.
- As you play with the metronome start from a pulse unison and gradually push your notes ahead of the click then pull back again to pulse unison (also the other way pulling behind the pulse) 
At the same time you can work on developing a higher level of awareness of the many natural rhythms in your everyday life and use exercises to help bring those rhythms into your music.
Time Feel, the subject of Chapter 7, is one of the great keys to musicality for rhythm section instruments. But being able to play behind or ahead of the pulse can also add expression to a melodic line. This, along with slight changes in dynamics, creates phrasing in music. The ability to hear the pulse and yet accelerate or decelerate slightly is a great way to incorporate human feeling into a musical performance. Of course, this is all relative to the tempo, and is best achieved relative to a steady tempo. In other words, the more definite your sense of pulse, the better your capability to manipulate it. This also works for the actions of ritardando and accelerando, as they are relative to a steady pulse and are best performed gradually rather than in sudden shifts"
In this way, with suitable metronome techniques, use of a metronome helps you to improve your sense of time and exact timing without causing any of the expected issues for musicality and expressive timing. The thing to bear in mind all the way through is that you use the metronome to help with exact timing – but that the sense of rhythm and musically expressive timing is something that comes from yourself. Rhythm is natural to human beings and pervades our lives, though you may need help to bring that rhythm into music. As Andrew Lewis says in his book:
Rhythm is everywhere. Be sensitive to it, and stay aware of spontaneous occurrences that can spur rhythmic development. Listen all the time and use your imagination. Become a rhythm antenna.
An exact sense of the passage of time doesn't come to humans so naturally (sometimes time may seem to pass quickly and sometimes more slowly) and that's where the metronome can help most. That's how the teachers of metronome technique referenced here think of the tool - as a way to increase your sensitivity to musical time, and develop greater precision of timing and a clearer sense of the passage of musical time - relative to which musicians can then use expressive, natural and fluid rhythms, with as much rubato and tempo variance as they wish for.
Alternatives to metronome use 
||This section needs additional citations for verification. (December 2012)|
If a musician decides not to use a metronome, other methods are required to deal with timing and tempo glitches, and rushing and dragging without its help. These ideas may also be useful as a complementary approach along with metronome technique.
One starting point is to notice that we rely on a sense of rhythm to perform ordinary activities such as walking, running, hammering nails or chopping vegetables. Even speech and thought has a rhythm of sorts. So one way to work on rhythms is to work on bringing these into music, becoming a "rhythm antenna" in Andrew Lewis's words. Until the nineteenth century in Europe, people used to sing as they worked, in time to the rhythms of their work. Musical rhythms were part of daily life, Cecil Sharp collected some of these songs before they were forgotten. For more about this see Work song and Sea shanties. In many parts of the world music is an important part of daily life even today. There are many accounts of people (especially tribal people) who sing frequently and spontaneously in their daily life, as they work, and as they engage in other activities.
"Benny Wenda, a Lani man from the highlands, is a Papuan leader now in exile in the UK, and a singer. There are songs for everything, he says: songs for climbing a mountain, songs for the fireside, songs for gardening. "Since people are interconnected with the land, women will sing to the seed of the sweet potato as they plant it, so the earth will be happy." Meanwhile, men will sing to the soil until it softens enough to dig." 
Musicians may also work on strengthening their sense of pulse using inner sources, such as breath, and subdividing breaths. Or work with the imagination, imagining a pulse. They may also work with their heart beat, and rhythms in their chest muscles in the same way.
Another thing they do is to play music in their mind's ear along with the rhythms of walking or other daily life rhythms. Other techniques include hearing music in ones mind's ear first before playing it. Musicians can deal with timing and tempo glitches by learning to hear a perfect performance in their mind's ear first.
In some styles of music such as early music notes inégales (according to one minority view interpretation) it can be appropriate to use a different approach that doesn't work so much with a sense of inner pulse and instead works on ideas of gestures and is more closely related to rhythms of speech and poetry. Ideas from this approach can be useful for all styles of music.
The basic ideas are -
- Notes should be subtly unequal - having no three notes the same helps to keep the music alive and interesting and helps prevent any feeling of sameness and boredom in the music - the idea of "Entasis"
This technique is especially challenging in its application, because musicians today are so rigidly trained in metrical regularity. Yet, like the beating of the heart, the musical pulse needs to fluctuate in speed as the emotional content of the music fluctuates. Like the natural shifting accents in speech, musical accents need to shift according to the meaning being expressed. To feel perfect, music must be metrically imperfect.
- Notes and musical phrases can be organized in gestures – particular patterns of rhythm that come naturally – rather than strict measures.
- Individual notes can be delayed slightly – when you expect a particular note e.g. at the end of a musical phrase – just waiting a moment or two before playing the note:
The cognitive partner of hesitation is anticipation: anticipation is created by building up assumption on assumption about what will happen. When the event which should occur fails to happen at the expected time, there exists a moment of disappointment. Disappointment, however, is soon transformed into a rush of pleasure when the anticipated event is consummated. The art is always in the timing.
- Notes played together can be allowed to go somewhat out of time with each other in a care-free fashion "Sans souci".
When the alignment of notes in the score suggests that they be performed strictly and simultaneously, they may be purposely jumbled or played in an irregular or a staggering manner to create a careless (sans souci) effect. This technique gives music a feeling of relaxed effortlessness
This just touches on some of the ideas; for more details, see "The Craft of Musical Communication".
This is a minority view on interpretation of this style of music, but well worth a mention here because of its different approach to musical time and rhythm, and its relevance to the way rhythms can be practised. The more generally accepted view is that Notes inégales were played with the same amount of swing nearly all the time, like modern Jazz.
See also 
|Wikisource has the text of the 1911 Encyclopædia Britannica article Metronome.|
- Maelzel's patent of the Metronome The Repertory of patent inventions: and other discoveries and improvements in arts, manufactures, and agriculture ... published by T. and G. Underwood, 1818 (alternative)
- Paul Lamere Revisiting the click track from Music Machinery, a blog about music technology - great post with graphs of variation in timing and tempo for various songs, with and without click tracks.
- Andrew Robertson DECODING TEMPO AND TIMING VARIATIONS IN MUSIC RECORDINGS FROM BEAT ANNOTATIONS 13th International Society for Music Information Retrieval Conference (ISMIR 2012)
- Vijay Iyar Microtiming Studies(from thesis at Berkeley university).
- The Metronomic Performance Practice: A History of Rhythm, Metronomes, and the Mechanization of Musicality; PhD Thesis by Alexander Bonus (May, 2010)
- Frederick Franz, revised by Jon Truelson Metronome Techniques
- CHAPTER III PotPourri - many quotes in favour of metronome use
- Metronome techniques: : being a very brief account of the history and use of the metronome with many practical applications for the musician ISBN 999834834X
- PRELUDE: The Musician and the Metronome from: Frederick Franz, revised by Jon Truelson "Metronome Techniques" Chapter 1 - and for the original 1947 book, with part of this quote highlighted, see quote highlighted in google books ISBN 999834834X
- "Oxford English Dictionary online". Retrieved 2009-01-16.
- Lynn Townsend White, Jr. (Spring, 1961). "Eilmer of Malmesbury, an Eleventh Century Aviator: A Case Study of Technological Innovation, Its Context and Tradition", Technology and Culture 2 (2), p. 97-111 :
- "A Brief History of the Metronome". Franz Manufacturing Company, Inc. Retrieved 2010-04-02.
- The Metronome; The Harmonicon, Volume 8, 1830
- Big list of Online and Desktop Software Metronomes
- Metronome Tracks - site with free metronome mp3s for download
- Flowers in the Dirt 1993 Reissue CD booklet; credited as "Metronome and body percussion".
- 1995 Remastered and Expanded Edition CD booklet liner notes.
- Hoffman, Miles (1997). The NPR Classical Music Companion: Terms and Concepts from A to Z. Houghton Mifflin Harcourt.
- A Practical Guide To Twentieth-Century Violin Etudes With Performance And Theoretical Analysis; by Aaron M. Farrell
- Make the Metronome Your Friend by Professor Dr. Steven Mauk (ref)
- Metronome Techniques - CHAPTER III Potpourri
- The end of early music: a period performer's history of music for the twenty-first century; page 49; (Oxford University Press) by Bruce Haynes
- The end of early music: a period performer's history of music for the twenty-first century; page 57; (Oxford University Press) by Bruce Haynes
- "Overcoming Romanticism": On the modernization of twentieth century performance practice by Robert Hill (Chapter 3 contribution to Music and Performance During the Weimar Republic; Cambridge University Press; November 2005)
- Refashioning Rhythm: Hearing, Acting, and Reacting to Metronomic Sound in Experimental Psychology, 1875–1915; by Alexander Bonus
- Metronomic society: Natural rhythms and human timetables (1988) by Michael Young - see also review incl. image by Ingram Pinn
- Franz Petersilea "On rudimental instruction on the piano"; translated from Neue Zeitschrift für Musik, Vol. 50, No. 3, 11, 16 by G. A. Schmitt
- New monthly magazine, Volume 66 (1842)
- A musical biography: or, Sketches of the lives and writings of eminent musical characters (1825)
- Justin London. "Pulse." In Grove Music Online. Oxford Music Online, (accessed July 28, 2008)
- Understanding the Samba Groove by Pedro Batista (original, alt.1, alt.2)
- Analyzing the earliest (pre-1930) samba recordings (e.g. Pelo Telefone from 1917), reveals strong differences with many of todays "samba" performances, many of which have a very different - sterile, modernist, metronomic ("corrupted") rhythm.
- "Thoughts on Tempi". Essays on the Origins of Western Music. David Whitwell. Quotes from Beethoven, Berlioz, and Liszt are referenced here.
- The Amateur String Quartet by James Brown III; The Musical Times, Vol. 68, No. 1014 (Aug. 1, 1927)
- Fundamentals of Piano Practice - Page 20 (pdf-page 22)
- Source from The Tyranny of the Bar-Line by Daniel Gregory Mason; The New music review and church music review, vol 9 (American Guild of Organists); 1909
- How do you teach the difference between counting rhythm and musical rhythm?
- Andrew Lewis's Rhythm, What it is and how to improve your sense of it especially his book 2 How to improve your sense of rhythm ISBN 0975466704
- Mac Santiago "Beyond the metronome" ISBN 1450731945
- What We’re Listening To 9/22 - Review of Andrew Lewis's " How to improve your sense of rhythm" by the managing editor Managing Editor Mike Dawson of Modern Drummer Magazine
- Mac Santiago "Beyond the metronome" - see Lesson 4: Rhythmony
- Tom Hess music corporation How To Practice Guitar Effectively With And Without A Metronome
- StudyBass interactive online lessons: Keeping The Beat
- Max Krimmel (guitar builder) Online Metronome Course
- Mac Santiago "Beyond the metronome" - see Chapter 3: The Diminishing Click particularly
- Mac Santiago "Beyond the metronome" - see Lesson 7: Being Inchronouse around the Click
- M.L. Carr, Violin World, March, 1896
- Andrew Lewis Book 4: Rhythm in Performance - see the section on Fluidity and Flexibility and the various Flexibility exercises particularly
- Andrew Lewis Book 2: How to Improve your Sense of Rhythm - see the section on IMPROVING PULSE AND RHYTHM THROUGH MOTION AND ACTION particularly
- Mac Santiago "Beyond the Metronome" 2010, Chapter 8, page 39
- Andrew Lewis Rhythm - What it is and How to Improve Your Sense of It, book II How to Improve Your Sense of Rhythm - A practical step-by-step guide to developing and strengthening rhythm and inner pulse, page 55 "Improving Pulse and Rhythm Using Nature and Aspects of Daily Life"
- Songs and freedom in West Papua
- Marianne Ploger and Keith Hill The Craft of Musical Communication Orphei Organi Antiqui 2005
|Wikiquote has a collection of quotations related to: Metronome|
- The Metronomic Performance Practice: A History of Rhythm, Metronomes, and the Mechanization of Musicality; PhD Thesis by Alexander Evan Bonus