Charlie Haden "The Montreal Tapes with Don Cherry and Ed Blackwell" (one of several "Montreal Tapes" recordings). It's essentially the Ornette Coleman quartet without, well..........Ornette Coleman! They pull it off on a well-recorded piece that's worth exploring.
Frank Morgan "Mood Indigo". Way, way WAY underrated and relatively little-known alto sax player who was something of a Charlie Parker protege'.
Woody Shaw "In My Own Sweet Way". Another (underrated) trumpet player who was held in very high regard by none other than Miles Davis.