Richard Perry to Leo Leichter in 8 Steps
- Richard Perry produced I'll Never Leave You
- I'll Never Leave You was published by Golden Syrup Music
- Golden Syrup Music published All I Think About is You
- All I Think About is You was produced by Nilsson House
- Nilsson House produced So Long Dad
- So Long Dad was sung by Harry Nilsson
- Harry Nilsson produced The Doobie Brothers - Listen to the Music
- The Doobie Brothers - Listen to the Music was produced by Leo Leichter