If you have to pick one from the film fake book, this is it, daddy-o. Richard Attenborough plays a rich-boy jazzbo who offers up his stylish East End warehouse for an all-night shebang. What unfolds are the lyrics from Othello with some new accompanying chords. Black bandleader Aurelius Rex (Paul Harris) is celebrating the first anniversary of his marriage to Caucasian crooner Delia (Marti Stevens). But Johnny Cousin (Patrick McGoohan), a psychopathic drummer from a rival band, wants to wreck Rex. He begins spreading raunchy rumors, and the rest is Shakespeare. But as that other William, William K. Everson, wrote, “The music is the thing.” And All Night Long is long on the lineup, including Charles Mingus in his first film appearance, along with Dave Brubeck on piano, Johnny Dankworth on sax, and drummer Allan Ganley, who taught McGoohan how to terrorize the tom-toms. These guys are not just on the soundtrack, but in the scene, rolling out cool jams as Aurelius gets the axe.