Sandy Bull (1938-2019) was an American musician and composer known for his innovative blend of genres, primarily folk, jazz, and world music. He gained prominence in the 1960s and is celebrated for his virtuosic guitar work and pioneering use of multi-tracking in live performances and recordings. Notable works include his albums "Fantasia for Guitar and Banjo" (1963), which showcased his eclectic style and technical skill, and "Elektra" (1967), featuring original compositions alongside traditional pieces. His 1970 album "The Invention of More" further solidified his reputation as an avant-garde artist. Bull's impact on music lies in his role as a precursor to the fusion of world music elements within contemporary genres, influencing subsequent generations of musicians. He was particularly noted for introducing Middle Eastern and Indian musical scales and rhythms to Western audiences. His experimental approach and integration of diverse cultural influences helped pave the way for later genres, including new age and fusion. Bull's artistry represents a significant chapter in the evolution of American folk and experimental music, making him an influential figure in the 20th-century music landscape.