Emmett Kennedy to It Came Upon a Midnight Clear in 15 Steps
- Emmett Kennedy played percussion for Duit on Mon Dei
- Duit on Mon Dei includes guitar played by Danny Kortchmar
- Danny Kortchmar wrote Feet
- Feet was sung by Harry Nilsson
- Harry Nilsson produced Frankenstein, Merlin & The Operation
- Frankenstein, Merlin & The Operation features drums played by Morris Pert
- Morris Pert played drums for Perhaps This is All a Dream
- Perhaps This is All a Dream was produced by Ringo Starr
- Ringo Starr played drums for Drumming is My Madness
- Drumming is My Madness features bass played by Dennis Belfield
- Dennis Belfield played bass for Back Off Boogaloo
- Back Off Boogaloo features guitar played by Fred Tackett
- Fred Tackett played guitar for ...That's the Way It Is
- ...That's the Way It Is includes percussion played by Doug Hoefer
- Doug Hoefer produced It Came Upon a Midnight Clear