Yepes, N. 1989. "Ser Instrumento". Speech of Ingression into the Real Academia de Bellas Artes de San Fernando delivered on 30 April 1989. [Available to download in Spanish on
www.narcisoyepes.org.]
Note: This is intentionally not an exhaustive list of websites and articles about ten-stringed guitars. We are aware of numerous sites and articles containing factually incorrect information about the Yepes 10-string guitar. Also, no extraneous resources pertaining to the various 10-stringed harp guitars of the 19th century are included here. These have different tunings and thus not sympathetic resonance for all 12 notes of the scale (the primary defining characteristic of the modern/Yepes 10-string guitar), as well as different string setups.
