Peter Mercurio to So Proud of You in 9 Steps
- Peter Mercurio played bass for ...That's the Way It Is
- ...That's the Way It Is includes saxophone played by Bobby Keys
- Bobby Keys played saxophone for Son of Schmilsson
- Son of Schmilsson includes percussion played by Ray Cooper
- Ray Cooper played percussion for Perhaps This is All a Dream
- Perhaps This is All a Dream features piano played by Diana Lewis
- Diana Lewis played piano for It Is He Who Will Be King
- It Is He Who Will Be King was produced by Harry Nilsson
- Harry Nilsson wrote So Proud of You