Harry Nilsson to Irving Berlin in 12 Steps
- Harry Nilsson wrote The Tree
- The Tree was produced by Rick Jarrard
- Rick Jarrard produced There Will Never Be
- There Will Never Be was written 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 first recorded by Eddie Cantor
- Eddie Cantor starred in the 1944 film Show Business
- Show Business actors include It Had to Be You
- It Had to Be You was arranged by Gordon Jenkins
- Gordon Jenkins arranged Always
- Always was written by Irving Berlin