Wrote songs for many films, especially after the popularity of film musicals increased in the late 1920s.
He started writing songs as a teenager and formed the Spier and Coslow music publishing company with Larry Spier.
He was also a film producer, winning the Academy Award for Best Short Film for Heavenly Music from 1943.
He married second wife Frances King in 1953. They had a daughter together.
He wrote songs with Arthur Johnston for several Bing Crosby movies.