Classical guitar may vary, but the typical shape is either "modern classical guitar" or that "historic classical guitar" similar to the early romantic guitars of France and Italy. Classical guitar strings once made of gut are now made of such polymers as nylon, with fine wire wound about the acoustically lower (bass side) strings. A guitar family tree may be identified. The flamenco guitar derives from the modern classical, but has differences in material, construction and sound. Today's "modern classical guitar" was established by the late designs of the 19th-century Spanish luthier, Antonio Torres Jurado. The classical guitar has a long history
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