Narciso Yepes, unamplified at the Royal Theatre of Madrid. From a 1982 Carnegie Hall review: 'Guitar concerts in [concert halls] can be a frustrating affair. Narciso Yepes brought his 10-string invention there last Thursday, and suddenly it was not a problem hearing that instrument in that space. 'His guitar fills the hall with sound. The musician who plucks it is one of the finest in the world today. The second half of the program was devoted entirely to 20th-century works, an intriguing survey of music - for an apparently limited instrument - that was at once engrossing yet challenging. Of greatest interest were Eduardo Sainz de la Maza's ''Laberinto,'' with its jazzy undercurrent, and Leonardo Balada's supremely virtuosic, exciting ''Analogias.'' 'Mr. Yepes, who appears to be not much larger than his oversize instrument, is a selfless musician, putting the music before his personality in what could serve as the ideal of any performing artist but so rarely is. One left his recital stimulated and elated, with nary a thought as to the potential limitations of the instrument, dynamically or musically.' Source of this review: http://www.csmonitor.com/1982/1117/111700.html/(page)/3 * Standard tuning of the Yepes 10-string guitar: 7=C2 [lowest string] 8=A#2 / Bb2 9=G#2 / Ab2 10=F#2 / Gb2 *