April 12 to Marlene Dietrich in 7 Steps
- April 12 is the birthday of David Cassidy
- David Cassidy recorded The Story Of Rock And Roll
- The Story Of Rock And Roll was covered by Collage
- The Collage has songs arranged by Perry Botkin
- Perry Botkin (the elder) played guitar for Bing Crosby
- Bing Crosby is one of the many artists that recorded Makin' Whoopee!
- Makin' Whoopee! was recorded by many artists including Marlene Dietrich