Anna Martin to Elvis Costello in 7 Steps
- Anna Martin married Harry Nilsson's uncle John Martin
- John Martin was a major musical influence on Harry Nilsson
- Harry Nilsson arranged Bongo Rock '73
- Bongo Rock '73 was mixed by John Lennon
- John Lennon married Yoko Ono
- Yoko Ono wrote Walking on Thin Ice
- Walking on Thin Ice was covered by Elvis Costello