Another classic from Herbie Hancock's Blue Note years. It's the title track off his fifth album and was recorded on May 17, 1965. It was arguably a concept album long before prog rock bands adopted the idea. It's a modal Jazz piece and consequently not easy to solo over. I stuck with a clean tone and adlibs, no recognisable guitar solo. It's very much a 'vibe', not really seeking to go beyond the laid back ethereal groove. This is the sort of chillout that Miles Davis did so well on his In A Silent Way album (Shhh and Peaceful).