Barbara Bach to Bill Martin in 7 Steps
- Barbara Bach married Ringo Starr
- Ringo Starr produced Frankenstein, Merlin & The Operation
- Frankenstein, Merlin & The Operation was produced by Harry Nilsson
- Harry Nilsson arranged Loop de Loop
- Loop de Loop was arranged by John Lennon
- John Lennon wrote Blackbird
- Blackbird features guitar played by Bill Martin