Classical guitar use with an added lower string tuned to A. This produced A-D-G-B-E, one of a wide number of variant tunings of the period. The low E string was added during the 18th century." This tuning is such that neighboring strings are at most 5 semitones apart. There are also a variety of commonly used alternate tunings. Classical guitar The classical guitar (also known as the nylon-string guitar, or Spanish guitar) is a member of the guitar family used in classical music. It is an acoustic wooden guitar with strings made of gut or nylon, rather than the metal strings used
Brahms guitar Brahms guitar Commonly referred to as the cello-guitar, the Brahms guitar was invented in 1994 by classical guitarist Paul Galbraith in collaboration with the luthier David Rubio. It was originally conceived in order to perform Johannes Brahms' Theme and Variations Opus 21a. David Rubio's protégé, luthier Martin Woodhouse, has innovated the design and continues to build Brahms guitars. The instrument is an eight-string guitar, adding both a high and a low string to the conventional six string guitar. The tuning adds a low A (a fifth below the standard low E, and a high A (a fourth above the standard