Si No Estas Tu to Douglas Trumbull in 9 Steps
- Si No Estas Tu was written by Joey Molland
- Joey Molland was a member of Badfinger
- Badfinger members include Pete Ham
- Pete Ham wrote Without You
- Without You was sung by Harry Nilsson
- Harry Nilsson sang The Ash Grove
- The Ash Grove was written by Diane Lampert
- Diane Lampert wrote the title song for Silent Running
- Silent Running was directed by Douglas Trumbull