It features bass guitarist Jaco Pastorius on the track "4 A.M.," plus multiple guests including Bennie Maupin, Sheila E. and Ron Carter, plus an all-synthesizer track ("Textures") performed entirely by Hancock.
The track "4 A.M." features bassist Jaco Pastorius, along with guest musicians Bennie Maupin, Sheila E., and Ron Carter, as well as a synthesizer-only piece ("Textures") performed solely by Hancock.