Wilton Felder to Claude Whatham in 9 Steps
- Wilton Felder played bass for Bongo Rock
- Bongo Rock was arranged by Don Coster
- Don Coster arranged Bongo Rock '73
- Bongo Rock '73 was mixed by John Lennon
- John Lennon wrote She's Leaving Home
- She's Leaving Home was arranged by George Tipton
- George Tipton arranged 1941
- 1941 inspired the film That'll Be the Day
- That'll Be the Day was directed by Claude Whatham