Preston Epps to Harry and the Hendersons in 11 Steps
- Preston Epps wrote Bongo Rock '73
- Bongo Rock '73 features drums played by Hal Blaine
- Hal Blaine played drums for Bongo Rock
- Bongo Rock was arranged by Harry Nilsson
- Harry Nilsson produced Bill Martin's Concerto for Headphones and Contra-Buffoon in Asia Minor
- Bill Martin's Concerto for Headphones and Contra-Buffoon in Asia Minor was recorded by Bill Martin
- Bill Martin wrote The Door into Summer
- The Door into Summer was sung by Michael Nesmith
- Michael Nesmith wrote Elephant Parts
- Elephant Parts was directed by William Dear
- William Dear directed Harry and the Hendersons