​From Wikipedia, the free encyclopedia. Mitchel Tate Musso (born July 9, 1991) is an American actor, singer and musician. Musso is best known for his three Disney Channel roles as Oliver Oken in the Disney Channel sitcom, Hannah Montana, Jeremy Johnson in the Disney Channel animated series Phineas and Ferb and his role as Brady in the Disney XD series Pair of Kings. In some of his other works, ...