The album was a commercial and artistic breakthrough for Hancock, crossing over to funk and rock audiences and bringing jazz-funkfusion to mainstream attention, peaking at number 13 on the Billboard 200. Hancock is featured with woodwind player Bennie Maupin from his previous sextet and new collaborators – bassist Paul Jackson, percussionist Bill Summers and drummer Harvey Mason. The latter group of collaborators, which would go on to be known as The Headhunters, also played on Hancock's subsequent studio album Thrust (1974). All of the musicians (with the exception of Mason) play multiple instruments on the album.