John Greaves is an English musician and composer known for his contributions to progressive rock and avant-garde music. Born on July 23, 1949, in the UK, Greaves gained prominence as a member of the influential band Henry Cow in the early 1970s, where his innovative approach to bass guitar and composition helped shape the band's experimental sound. Notable works include his collaborations with other avant-garde musicians, such as the album "Songs" (1978), which features a mix of original compositions and reinterpretations of existing works. Greaves also released solo albums like "Accord de Paris" (1991) and "Back to the Mines" (2017), showcasing his eclectic style that blends rock, jazz, and classical influences. His impact on music extends beyond his performance; Greaves has been a key figure in the RIO (Rock in Opposition) movement, promoting artistic freedom and experimentalism in music. His work has inspired a generation of musicians within the progressive and experimental genres, and he continues to be recognized for his unique contributions to the evolution of contemporary music.