Six Continents Music to Bing Crosby in 8 Steps
- Six Continents Music published Guess Who's Coming To Lunch
- Guess Who's Coming To Lunch was published by Unichappell Music
- Unichappell Music published The Tree
- The Tree was written by Harry Nilsson
- Harry Nilsson sang It Had to Be You
- It Had to Be You was written by Gus Kahn
- Gus Kahn wrote Makin' Whoopee!
- Makin' Whoopee! was recorded by many artists including Bing Crosby