Milt Franklyn spent most of his career as an unsung musical arranger and conductor for the Warner Bros. cartoon studio. From 1936 he was the right-hand man of composer
Carl W. Stalling, orchestrating the 7-minute scores Stalling had to produce every 10 days for the "Looney Tunes" and "Merrie Melodies" shorts. In the mid-1950s ill-health forced Stalling to scale back his workload and Franklyn gradually assumed his duties, notably on the Bugs Bunny classic "What's Opera, Doc?" (1957). He became music director for the Warner Bros. cartoons upon Stalling's retirement in 1959 and kept the job until his death three years later.