Doin' It · Herbie Hancock Secrets ℗ 1976 Columbia Records, a division of Sony Music Entertainment Released on: 1976-08-15 Piano, Associated Performer, Composer, Producer: Herbie Hancock Vocal: "Wah Wah" Watson Drums, Background Vocal: James Gadson Background Vocal: Ray Parker Jr. Background Vocal: Art Baldacci Background Vocal: Fred Dobbs Background Vocal: Don Kerr Background Vocal: Chris Mancini Composer: M. Ragin Composer: R. Parker, Jr. Producer: David Rubinson & Friends, Inc. Recording Engineer: Michael Fusaro