Danny Thomas to Rod Stewart in 6 Steps
- Danny Thomas starred in I'll See You in My Dreams as Gus Kahn
- Gus Kahn wrote It Had to Be You
- It Had to Be You was produced by Derek Taylor
- Derek Taylor produced Makin' Whoopee!
- Makin' Whoopee! was recorded by many artists including Elton John
- Elton John recorded a duet of "Makin' Whoopee" with Rod Stewart