Al Casey to Marlene Dietrich in 6 Steps
- Al Casey played guitar for Aerial Ballet
- Aerial Ballet includes piano played by Michael Melvoin
- Michael Melvoin played piano for Harry
- Harry was the first name of Bing Crosby
- Bing Crosby is one of the many artists that recorded Makin' Whoopee!
- Makin' Whoopee! was recorded by many artists including Marlene Dietrich