Tibor Zelig to David Letterman in 13 Steps
- Tibor Zelig played violin for The Point!
- The Point! includes guitar played by Dennis Budimir
- Dennis Budimir played guitar for Duit on Mon Dei
- Duit on Mon Dei includes saxophone played by Bobby Keys
- Bobby Keys played sax for All My Life
- All My Life was published by Blackwood Music
- Blackwood Music published Are You Sleeping?
- Are You Sleeping? was published by Six Continents Music
- Six Continents Music published The Tree
- The Tree was written by Harry Nilsson
- Harry Nilsson wrote I Yam What I Yam
- I Yam What I Yam is heard in Robin Williams: Come Inside My Mind
- Robin Williams: Come Inside My Mind features an appearance by David Letterman