Cynthia Henderson to Blackbird in 7 Steps
- Cynthia Henderson recorded You're Breaking My Heart
- You're Breaking My Heart was published by Blackwood Music
- Blackwood Music published Salmon Falls
- Salmon Falls was sung by Harry Nilsson
- Harry Nilsson 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 Paul McCartney
- Paul McCartney wrote Blackbird