That'll Be the Day to Morris Pert in 9 Steps
- That'll Be the Day stars Ringo Starr
- Ringo Starr played percussion for Son of Dracula
- Son of Dracula includes piano played by Nicky Hopkins
- Nicky Hopkins played piano for Old Dirt Road
- Old Dirt Road has backing vocals by Harry Nilsson
- Harry Nilsson produced It Is He Who Will Be King
- It Is He Who Will Be King features bass played by Chris Lawrence
- Chris Lawrence played bass for Perhaps This is All a Dream
- Perhaps This is All a Dream features drums played by Morris Pert