He also wrote several hit songs for other artists including "Everybody Plays the Fool" by The Main Ingredient, "Sweet Music, Soft Lights And You" by Isaac Hayes & Millie Jackson, "Love, Love, Love" by Donny Hathaway, and "Just Me And You" by Erasmus Hall.
Clark was nominated for the Grammy Award for Best R&B Song for his lead contribution in writing the 1972 Top Five hit "Everybody Plays the Fool" by The Main Ingredient.
List of Doctor Who audio plays by Big Finish | Henry Fool | The Singing Fool | plays | Nobody's Fool (1994 film) | Shakespeare's plays | Kissing a Fool | Fool's Gold Records | Fool's Gold | She's a Fool | Love's Made a Fool of You | Flashbacks of a Fool | Everybody Plays the Fool | David Gardner (The Motley Fool) | You Can't Fool Me Dennis | Tom Fool | The Queen's Fool | The Fairylogue and Radio-Plays | Plays Pretty for Baby | King for a Day... Fool for a Lifetime | Jimi Plays Monterey | Inspector Ghote Plays a Joker | Fool's Gold (band) | Fool Moon | Fool | Eastern Plays | April Fool's Day | April Fool's | The Plays of William Shakespeare | The Nigel Barton Plays |