Allan Sherman

Allan Sherman (born Allan Copelon; born November 30, 1924-died November 20, 1973) was an American comedy writer and television producer who became famous as a song parodist in the early 1960s. His biggest hit single was "Hello Muddah, Hello Fadduh". He is best known for voicing The Cat in the Hat in the television special of the same name and in Dr. Seuss on the Loose.