Bradley is best remembered for scoring the MGM theatrical cartoons including those starring Tom and Jerry (Hanna-Barbera 1940-1958, 113 of 114 episodes), Droopy (all 24 episodes), Barney Bear (all 26 episodes) and many one-off cartoons. In 1954, MGM terminated his weekly contract but retained his services as a freelance, paying him $1,000 per film. This arrangement lasted until MGM closed its cartoon department in 1957, after which Bradley retired. He died on April 27, 1977 in Chatsworth, California and is buried at Chatsworth's Oakwood Memorial Park.