Richard Perry to Walter Donaldson in 8 Steps
- Richard Perry produced My World
- My World is an album by Ray Charles
- Ray Charles is one of many artists that recorded It Had to Be You
- It Had to Be You was produced by Derek Taylor
- Derek Taylor produced I Wonder Who's Kissing Her Now
- I Wonder Who's Kissing Her Now was arranged by Gordon Jenkins
- Gordon Jenkins arranged Makin' Whoopee!
- Makin' Whoopee! was written by Walter Donaldson