History of the classical guitar
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Precursors to the classic guitar 
Renaissance stringed instruments 
While the precise lineage of the instrument is still unclear, historians believe that the guitar is the descendant of the Greek kithara, gittern, lyre, European and Middle Eastern lutes, and the Spanish vihuela. The poem The Book of Good Love[when?] describes two early instruments, guitarra morisca and guitarra latina.
- Then came out, with a strident sound, the two-stringed Moor’s gittern,
- High-pitched as to its range, as to its tone both harsh and bold;
- Big-bellied lute which marks the time for merry, rustic dance,
- And Spanish guitar which with the rest was herded in the fold
The first incarnation of what is now called the guitar first appeared during the Renaissance. The Renaissance guitar contained four pairs of strings called courses. The Renaissance guitar shared most similarities with the Spanish vihuela, a six-coursed instrument with similar tuning and construction. Juan Bermudo published Declaración de Instrumentos Musicales in 1555, a treatise containing a section on plucked string instruments. This publication examined the relationship between the guitar and vihuela, and also differentiated between four and five-course guitars. The five-course guitar did not phase out the four-course instrument until the Baroque period.
One of the first major methods published for five-course guitar is Joan Carles Amat's Guitarra Española de Cinco Órdenes published in 1596.
The vihuela became popular in Spain and Italy and remained common until the late 16th century. This instrument appears to have had a strong influence in the design and tuning of the early five course guitars that first appeared in Spain in the middle of the sixteenth century. These five course guitarras replaced the four course Renaissance instruments, particularly in Spain. The guitarra set the modern standard tuning - A, D, G, B, E - for the top five strings that continues to this day. The amount of frets on the guitar was increased from eight to ten and eventually to twelve. Later, it was in Italy that a sixth course became commonplace and this was a easily done by replacing/reworking the nut and bridge to plug in another tuning peg hole for the sixth string. An ornate guitar made by a Joakim Thielke (1641 – 1719) of Germany, was altered in this way and became a success.
From the mid 18th century through the early 19th century, the guitar evolved into a six-string instrument, phasing out courses by preference to single strings. These six-string guitars were still smaller than the modern classical guitar.
Romantic guitar 
Modern classical guitar 
The design of the modern classical guitar can be attributed to Antonio de Torres. The construction of these guitars has been considered the standard in "traditional" instruments since the mid 19th century.
Contemporary classical guitars follow the Smallman design which replaces the fan braces with a much lighter balsa brace attached to the back of the sound board with carbon fiber. The balsa brace has a honeycomb pattern and allows the (now much thinner) sound board to support more vibrational modes. This leads to greater volume and longer sustain.
- Juan Ruiz, Libro de Buen Amor, English translation by Saralyn Daly, The Book of True Love: a Bilingual Edition (University Park: Pennsylvania State University Press, c1978): 311-329.
- Stanley Sadie, The New Grove Dictionary of Musical Instruments, (New York: Macmillan Press Limited, 1984).
- Grove Music Online. http://www.oxfordmusiconline.com/subscriber/book/omo_gmo
- Graham Wade, A Concise History of the Classic Guitar (Pacific: Mel Bay, 2001): 25-31.
- "The first incontrovertible evidence of five-course instruments can be found in Miguel Fuenllana's Orphenica Lyre of 1554, which contains music for a vihuela de cinco ordenes. In the following year Juan Bermudo wrote in his Declaracion de Instrumentos Musicales: "We have seen a guitar in Spain with five courses of strings." Bermudo later mentions in the same book that "Guitars usually have four strings," which implies that the five-course guitar was of comparatively recent origin, and still something of an oddity". Tom and Mary Anne Evans Guitars: From the Renaissance to Rock. Paddington Press Ltd 1977 p.24
- "We know from literary sources that the five course guitar was immensely popular in Spain in the early seventeenth century and was also widely played in France and Italy...Yet almost all the surviving guitars were built in Italy...This apparent disparity between the documentary and instrumental evidence can be explained by the fact that, in general, only the more expensively made guitars have been kept as collectors' pieces. During the early seventeenth century the guitar was an instrument of the people of Spain, but was widely played by the Italian aristocracy." Tom and Mary Anne Evans. Guitars: From the Renaissance to Rock. Paddington Press Ltd 1977 p.24
- Wade, Graham, Traditions of the Classical bris, London : Calder, 1980.
- Antoni Pizà: Francesc Guerau i el seu temps (Palma de Mallorca: Govern de les Illes Balears, Conselleria d'Educació i Cultura, Direcció General de Cultura, Institut d'Estudis Baleàrics, 2000)
- The guitar in Europe: four centuries of masterpieces by Sinier de Ridder
- Thematic essay: The guitar Jayson Kerr Dobney, Wendy Powers (The Metropolitan Museum of Art)
- Classical Guitar Illustrated History by François Faucher on Classicalguitarmidi.com.
- Classical Guitar Museum (UK)