Beatles Undercover to Mark McGann in 9 Steps

1. Beatles Undercover includes a chapter on Harry Nilsson
2. Harry Nilsson sang She's Leaving Home
3. She's Leaving Home was written by Paul McCartney
4. Paul McCartney produced Mary Hopkin's recording of The Puppy Song
5. The Puppy Song was covered by Victoria Williams
6. Victoria Williams was born on December 23
7. December 23 is the birthday of David Gillum
8. David Gillum appeared in John and Yoko: A Love Story
9. John and Yoko: A Love Story features an appearance by Mark McGann

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