 He was the composer of Tweety's theme song, "I Tawt I Taw A Puddy Tat".He worked, sometimes uncredited, on cartoons considered among the greatest ever, including "Porky in Wackyland", "Book Revue", "The Great Piggy Bank Robbery" and "Daffy Doodles", the latter three featuring Daffy Duck in 1946, "Catty Cornered" featuring Sylvester the Cat in 1953 and "Bugs and Thugs" featuring Bugs Bunny in 1954.His career took an upward turn in 1959 at Hanna-Barbera, where he spent the next seven years as a writer on a number of notable animated programs, beginning with "The Huckleberry Hound Show".