Frank

Gleeson plays Jon, a wannabe musician who finds himself out of his depth when he joins a maverick pop band led by the enigmatic Frank (Fassbender)—a musical genius who hides himself inside a large fake head—and his terrifying sidekick Clara (Gyllenhaal). It is a fictional story loosely inspired by Frank Sidebottom, the persona of cult musician and comedy legend Chris Sievey, as well as other outsider musicians like Daniel Johnston and Captain Beefheart.