Mary Hopkin to Willem Van Hanegem in 6 Steps
- Mary Hopkin played guitar for Mary Hopkin's recording of The Puppy Song
- The Puppy Song was published by Six Continents Music
- Six Continents Music published Are You Sleeping?
- Are You Sleeping? was sung by Harry Nilsson
- Harry Nilsson wrote Don't Forget Me
- Don't Forget Me was covered by Willem Van Hanegem