John Lennon to Mark Warman in 8 Steps
- John Lennon arranged Loop de Loop
- Loop de Loop features bass played by Klaus Voormann
- Klaus Voormann played bass for Pussy Cats
- Pussy Cats includes guitar played by Danny Kootch
- Danny Kootch played guitar for Subterranean Homesick Blues
- Subterranean Homesick Blues features drums played by Ringo Starr
- Ringo Starr played drums for Runaways
- Runaways has backing vocals by Mark Warman