Drafthouse Films has inked a deal to release the Sundance music documentary “We Are X” in U.S. theaters, Variety has learned. The movie will open in limited release on Oct. 21 in New York and Los Angeles, with a bigger expansion and awards push planned.

“We Are X” chronicles the backstory of the punk-rock band “X Japan,” as its star drummer Yoshiki prepares for a reunion concert at Madison Square Garden. While not known to U.S. audiences, Yoshiki has sold more than 30 million records overseas, where he enjoys an A-list following.

Directed by Stephen Kijak, “We Are X” includes testimonials from such high-profile groupies as Gene Simmons and Marilyn Manson.

The movie is produced by Passion Pictures’ John Battsek (“Searching for Sugar Man”).

After receiving favorable reviews last winter, the documentary nabbed a special jury prize in editing at Sundance. It later played at SXSW, where Yoshiki treated the Austin crowds to a concert.

Drafthouse Films is the distribution arm of Alamo Drafthouse Cinemas, founded in 2012 by Tim League, who will be working with ex-Radius head Tom Quinn on the release of movie.