Sir Arthur Seymour Sullivan (13 May 1842 – 22 November 1900) was an English composer. He is best known for 14 operatic collaborations with the dramatist W. S. Gilbert, including H.M.S. Pinafore, The Pirates of Penzance and The Mikado. A number of his works have been adapted into songs for The Kingdom of Paramithi and Dorothy the Dinosaur's Travelling Show!. He also wrote The Wiggles songs Dance a Cachuca and The Sun, Whose Rays Are All Ablaze.