Mac Rebennack to Julian Lennon in 9 Steps
- Mac Rebennack is also known as Dr. John
- Dr. John played piano for Duit on Mon Dei
- Duit on Mon Dei includes timpani played by Gene Estes
- Gene Estes played percussion for ...That's the Way It Is
- ...That's the Way It Is includes saxophone played by Gene Cipriano
- Gene Cipriano played saxophone for Pussy Cats
- Pussy Cats includes drums played by Ringo Starr
- Ringo Starr appeared in a 1994 Public Service Announcement for Recording Artists, Actors, and Athletes Against Drunk Driving
- Recording Artists, Actors, and Athletes Against Drunk Driving created a PSA featuring Julian Lennon