Ringo Starr to Wren Music in 8 Steps

1. Ringo Starr appeared in a 1994 Public Service Announcement for Recording Artists, Actors, and Athletes Against Drunk Driving
2. Recording Artists, Actors, and Athletes Against Drunk Driving created a PSA featuring Paul McCartney
3. Paul McCartney wrote You Can't Do That
4. You Can't Do That was written by John Lennon
5. John Lennon produced Subterranean Homesick Blues
6. Subterranean Homesick Blues features guitar played by Danny Kootch
7. Danny Kootch played guitar for Loop de Loop
8. Loop de Loop was published by Wren Music

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