Piano: John Lennon - Vocals: John Lennon - Drums: Ringo Starr - Bass Guitar: Klaus Voormann - Audio Concept: Yoko Ono - Producer: John Lennon - Producer: Yoko Ono - Producer: Phil Spector - Engineer: Phil McDonald - Engineer: Richard Lush - Engineer: John Leckie - Engineer: Andy Stephens - Engineer: Eddie Klein - Producer: Yoko Ono Lennon - Mixer: Paul Hicks - Engineer: Paul Hicks - Asst. Recording Engineer: Sam Gannon - Mastering Engineer: Simon Gibson - Recording Supervisor: Simon Hilton - Production Coordinator: Simon Hilton - Composer/Author: John Lennon