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Paul Tripp
Paul Tripp (February 20, 1911 – August 29, 2002) was an American children's musician, author, songwriter, and television and film actor. He collaborated with a fellow composer, George Kleinsinger. Tripp was the creator of the 1945 "Tubby the Tuba", a piece of classical music for children that has become his best-known work. He authored several books, including Rabbi Santa Claus and Diary of a Leaf.
Source: Wikipedia