Doris Day to It Had to Be You in 7 Steps
- Doris Day recorded a duet of "Makin' Whoopee" with Danny Thomas
- Danny Thomas starred in I'll See You in My Dreams as Gus Kahn
- Gus Kahn wrote Makin' Whoopee
- Makin' Whoopee was arranged by Gordon Jenkins
- Gordon Jenkins arranged I Wonder Who's Kissing Her Now
- I Wonder Who's Kissing Her Now was produced by Derek Taylor
- Derek Taylor produced It Had to Be You