Jimmy Calvert to How Can I Be Sure of You in 9 Steps
- Jimmy Calvert played guitar for You're Sixteen
- You're Sixteen features piano played by Nicky Hopkins
- Nicky Hopkins played piano for The Lottery Song
- The Lottery Song features guitar played by Peter Frampton
- Peter Frampton played guitar for Son of Dracula
- Son of Dracula includes drums played by Ringo Starr
- Ringo Starr produced Frankenstein, Merlin & The Operation
- Frankenstein, Merlin & The Operation was produced by Harry Nilsson
- Harry Nilsson wrote How Can I Be Sure of You