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. The instrument was originally conceived in order to perform Johannes Brahms’ Theme and Variations Opus 21a.
The instrument is an eight string guitar, adding both a high and a low string to the conventional six string guitar. The tuning continues in fourths and the frets are splayed to allow for the different string lengths.
Galbraith’s method is to play the Brahms guitar in the cello position adding greater freedom to both hands and incorporating a resonating box.