Ian Ernest Gilmore "Gil" Evans (né Green; May 13, 1912 – March 20, 1988) was a Canadian jazz pianist, arranger, composer and bandleader. He played an important role in the development of cool jazz, modal jazz, free jazz and jazz fusion, and collaborated extensively with MilesDavis. http://en.wikipedia.org/wiki/Gil_Evans
Jimi Hendrix's 1970 death made impossible a scheduled meeting with Evans to discuss having Hendrix front a big band led by Evans. In 1974, he released an album of his arrangements of music by Hendrix, with guitarist Ryo Kawasaki. From that date on, Evans's ensembles featured electric guitars and basses, including a notable collaboration with bassist JacoPastorius.