David T. Walker to Mary Hopkin in 8 Steps
- David T. Walker played guitar for Bongo Rock
- Bongo Rock was arranged by Harry Nilsson
- Harry Nilsson produced The Flying Saucer Song
- The Flying Saucer Song was produced by John Lennon
- John Lennon wrote Blackbird
- Blackbird was written by Paul McCartney
- Paul McCartney produced Mary Hopkin's recording of The Puppy Song
- The Puppy Song by Mary Hopkin features guitar played by Mary Hopkin