A Man and His Castle to Wren Music in 7 Steps
- A Man and His Castle was written by John Marascalco
- John Marascalco wrote I Know
- I Know was written by Harry Nilsson
- Harry Nilsson produced Frankenstein, Merlin & The Operation
- Frankenstein, Merlin & The Operation was produced by Ringo Starr
- Ringo Starr played drums for Loop de Loop
- Loop de Loop was published by Wren Music