The music of Miles Davis was changing dramatically in the late 1960s. Most fans of the legendary trumpeter know that in 1969 he recorded Bitches Brew, the hugely successful dawn of jazz-rock that was one of the best selling jazz records ever released. Lesser known is the working unit that Miles took with him on the road was one of the most artistically daring and visionary bands that Miles ever led. Recordings of that outfit have recently surfaced and have been released on a multi-disc set, Live In Europe 1969, The Complete Bootleg Sessions Vol. 2.