Hancock and his tough group (including Billy Hart, Julian Priester, Dr. Eddie Henderson, Bennie Maupin, and Buster Williams) cut this gem for their new label, Columbia. Like its Warner predecessors, the album features a kind of post-modal, free impressionism while gracing the edges of funk. The three long tracks are exploratory investigations into the nature of how mode and interval can be boiled down into a minimal stew and then extrapolated upon for soloing and “riffing.” In fact, in many cases, the interval becomes the riff, as is evidenced by “Rain Dance.” The piece that revealed the true funk direction, however, was “Hidden Shadows,” with its choppy basslines and heavy percussion — aided