John Lennon to Danny Kortchmar in 12 Steps
- John Lennon produced Black Sails In The Moonlight
- Black Sails In The Moonlight was sung by Harry Nilsson
- Harry Nilsson produced Frankenstein, Merlin & The Operation
- Frankenstein, Merlin & The Operation was produced by Ringo Starr
- Ringo Starr played drums for Drumming is My Madness
- Drumming is My Madness features trombone played by Bruce Paulson
- Bruce Paulson played trombone for Back Off Boogaloo
- Back Off Boogaloo features guitar played by Fred Tackett
- Fred Tackett played guitar for Zip-A-Dee-Doo-Dah
- Zip-A-Dee-Doo-Dah was produced by Van Dyke Parks
- Van Dyke Parks played keyboards for ...That's the Way It Is
- ...That's the Way It Is includes guitar played by Danny Kortchmar