Robert Sherman to Bob Dylan in 8 Steps

1. Robert Sherman wrote You're Sixteen
2. You're Sixteen was sung by Ringo Starr
3. Ringo Starr appeared in a 1994 Public Service Announcement for Recording Artists, Actors, and Athletes Against Drunk Driving
4. Recording Artists, Actors, and Athletes Against Drunk Driving created a PSA featuring Paul McCartney
5. Paul McCartney wrote Blackbird
6. Blackbird was written by John Lennon
7. John Lennon produced Subterranean Homesick Blues
8. Subterranean Homesick Blues was written by Bob Dylan

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