April 29 to Hal Willner in 5 Steps
- April 29 is the birthday of Klaus Voormann
- Klaus Voormann played bass for Duit on Mon Dei
- Duit on Mon Dei includes piano played by Van Dyke Parks
- Van Dyke Parks produced Zip-A-Dee-Doo-Dah
- Zip-A-Dee-Doo-Dah was produced by Hal Willner