April 12 to Mark McGann in 8 Steps

1. April 12 is the birthday of David Cassidy
2. David Cassidy recorded The Puppy Song
3. The Puppy Song was recorded by Victoria Williams
4. Victoria Williams was born on December 23
5. December 23 is the birthday of David Gillum
6. David Gillum is also known as David Gilliam
7. David Gilliam Played Harry Nilsson in John and Yoko: A Love Story
8. John and Yoko: A Love Story features an appearance by Mark McGann

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