Grease to Danny Thomas in 7 Steps
- Grease cast includes John Travolta
- John Travolta is one of many artists that recorded It Had to Be You
- It Had to Be You appeared in the film Show Business
- Show Business is a 1944 film starring Eddie Cantor
- Eddie Cantor was the first singer to record Makin' Whoopee!
- Makin' Whoopee! was written by Gus Kahn
- Gus Kahn is played in I'll See You in My Dreams by Danny Thomas