Ten-string classical guitar of Yepes

Ten-string extended-range classical guitar

The modern ten-string extended-range classical guitar was produced in 1963 by luthier José Ramírez III in collaboration with guitarist Narciso Yepes, who intended it to be used with a specific reentrant tuning.

It has since been adopted by a number of classical guitarists, using both Yepes' tuning and others.

Invention

In the early 1960s, José Ramírez III, a luthier noted for his innovations to the classical guitar, was inspired by the viola d'amour to investigate the addition of sympathetic strings to the classical guitar. As was his practice, he sought advice from the leading classical guitarists of the time, notably Andrés Segovia and Narciso Yepes, both of them players of Ramírez six-string guitars.

Yepes was particularly taken with the idea, but both he and Ramírez were concerned with the problem of muting the extra strings when not required. Yepes at first suggested damping them with a mechanism similar to the sustain pedal of a piano, built in to the guitar, but Ramírez was not keen on loading the instrument with so much mechanism.

Then Yepes telephoned Ramírez and suggested that simply by adding four extra bass strings, accomodated by a wider than normal bridge, fretboard and head, and adopting a particular reentrant tuning, an instrument could be produced that had a unique balance of resonances throughout the chromatic scale. Yepes further stated that he had devised a technique for the right hand which would allow the player to damp the extra strings when not required.

Ramírez produced the instrument described, and after some initial struggles to master the technique, Yepes enthusiastically played and promoted this pattern and tuning of ten-string guitar for the rest of his life. Today ten-string instruments to Ramírez' original design remain available from the Ramírez Company, and similar instruments in a variety of designs are available both from the Ramírez Company and other first-class luthiers.

While Yepes' tuning continues to have a loyal following among some guitarists, other classical ten-string guitarists have used different stringings and tunings, some of them reentrant and some not. Yepes himself was always very particular to point out that only this one tuning would achieve the resonance which was his aim, and the question of to what extent these various other stringings and tunings compromise this aim is somewhat controversial.

Tunings

Yepes' tuning: e' - b - g - d - A - E - C - B♭ - A♭ - G♭ in Helmholtz pitch notation

Yepes' reentrant tuning added our bass strings tuned to C, B-flat, A-flat, G-flat were added, whose harmonics at octave and perfect fifth intervals provided the eight missing resonances. Yepes did not consider other harmonics to be suffiently in tune to supply resonances.

Other ten-string tunings subsequently proposed for this instrument differ sufficiently from the Yepes tuning to require different string gauges, and so are not simple scordatura. For example, the five Marlow tunings (see below) require a lighter 7th string, as this is tuned about an octave higher than the Yepes tuning (depending on the exact tuning), which would double the tension on this string if the gauge were not reduced. Non-reentrant tunings similarly require heavier strings on the three lowest bass strings. Some but not all instruments from the Yepes era and tradition accomodate these stringings well.

Baroque tuning e' - b - g - d - A - E - D - C - B_I - A_I

A non-reentrant tuning with the additional strings tuned diatonically from D to A_I has been termed the "Baroque" or "Romantic" tuning.

Standard Marlow Method tuning e' - b - g - d - A - E - B - F# - C# - G#_I

Janet Marlow has proposed an alternative reentrant tuning system of five different tunings, in all of which the reentry takes place between the 6th and 7th strings, rather than between 7th and 8th as proposed by Yepes.

Derivative instruments

Main article: ten-string guitar

The ten-string extended-range layout has been adopted to several other styles of guitar, including the ten-string jazz guitar and the ten-string solid body electric guitar.

See also

• Ten-string guitar.

Further reading

• Ramirez III, Jose. 1994. "The Ten-String Guitar" in Things About the Guitar. Bold Strummer. pp. 137-141. [ISBN-10: 8487969402] [1]
• Yepes, Narciso. 1978. "The 10-String Guitar: Overcoming the Limitations of Six Strings". Interview by Larry Snitzler. Guitar Player 12(3): pp. 26, 42, 46, 48, 52.
• Yepes, Narciso. 1981 "Narciso Yepes and His 10-String Guitar". Interview-Article by Allan Kozinn.
• The New York Times, Nov. 22: p. D21