He also composed the scores to countless films and made-for-TV movies; including Onassis: The Richest Man in the World, 18 Again!, Guilty Conscience, Helter Skelter, The Legend of Lizzie Borden, (Sidney Sheldon's) Rage of Angels and hundreds of others.
Prince's next break came when George Burns asked him to co-write and produce Burns' feature film 18 Again.