Wonderful Summer to The Tree in 9 Steps
- Wonderful Summer was arranged by Perry Botkin
- Perry Botkin (the elder) played guitar for Bing Crosby
- Bing Crosby is one of the many artists that recorded Makin' Whoopee!
- Makin' Whoopee! was produced by Derek Taylor
- Derek Taylor produced It Had to Be You
- It Had to Be You was sung by Harry Nilsson
- Harry Nilsson produced Poli High
- Poli High was published by Unichappell Music
- Unichappell Music published The Tree