This 1974 double LP gathers up tracks from 1970 through 1974, recorded with variations on whatever band Davis was touring with at the time. The piece from 1970 rocks; the ones from 1972 are stark and alienating; the ones from 1973 and 1974 are pure acid funk; and the opener, “He Loved Him Madly,” a 32-minute tribute to the recently deceased Duke Ellington that takes the form of a funeral dirge beaming from the dark side of the moon, makes the set essential all on its own.

– Phil Freeman