Arthur "Dooley" Wilson was an American actor, singer and musician who is best remembered as Sam in the 1942 film, Casablanca; in the film, he also performed its theme song, "As Time Goes By". Wilson was a drummer and singer who led his own band in the 1920s, touring nightclubs in London and Paris. In the 1930s he took up acting, playing supporting roles onstage on Broadway and in a series of modest films.