Michael Fassbender has joined the cast of 'Frank,' a new British comedy in which he will play a musician in a rock band, which already makes this movie way cooler than 'Rock of Ages.' Yeah, Tom Cruise, you heard us.

Variety reports that Michael Fassbender has signed on for 'Frank,' a new comedy from British outfit Film4. Also on board is Domhnall Gleeson of Joe Wright's upcoming 'Anna Karenina' adaptation with Keira Knightley.

The film follows an aspiring young musician (Gleeson) who joins an "eccentric" rock band fronted by Fassy's character. We just have one question: In this context, does "eccentric" mean "shirtless"? Trouble arises when the young fellow realizes he may have gotten more than he bargained for with these rockers.

Lenny Abrahamson is directing from a script by Jon Ronson and Peter Straughan. Abrahamson's most recent film, 'What Richard Did' is premiering this month at the Toronto International Film Festival in -- you guessed it -- Toronto.

Fassy's been quite the busy gentlemen, starring in this year's 'Prometheus' and re-teaming with its director Ridley Scott for 'The Counselor,' which is currently filming. He's in talks to star alongside Natalie Portman in 'Jane Got a Gun' for director Lynne Ramsay, and he'll be filming the sequel to 'X-Men: First Class' next year.