John Lennon to Leigh Harline in 6 Steps
- John Lennon played piano for Old Dirt Road
- Old Dirt Road was written by Harry Nilsson
- Harry Nilsson sang Zip-A-Dee-Doo-Dah
- Zip-A-Dee-Doo-Dah was produced by Hal Willner
- Hal Willner produced When You Wish Upon a Star
- When You Wish Upon a Star was written by Leigh Harline