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A double act (also known as a comedy duo) is a form of comedy originating in the British music hall tradition, and American vaudeville, in which two comedians perform together as a single act. Pairings are typically long-term, in some cases for the artists' entire careers. Double acts perform on the stage, television and film.
The format is particularly popular in the UK where successful acts have included Peter Cook and Dudley Moore (Cook’s deadpan delivery contrasted with Moore’s buffoonery), Morecambe and Wise and The Two Ronnies. The tradition is also present in the US with acts like Wheeler and Woolsey, Abbott and Costello, Gallagher and Shean, Burns and Allen, and Lyons and Yosco. The British-American comedy double act Laurel and Hardy has been described as the most popular in the world.