(Radio.com) Walking out of the theater after watching Captain America: Civil War moviegoers are likely to have a tune stuck in their heads. The twangy indie-rock track is vaguely familiar but hard to place.

Alt-J's "Left Hand Free" is front-and-center during a pivotal scene during the film and plays again in its entirety during the credits, which you are strongly advised to sit through.

The song's lyrics appear to fit two of the film's main characters perfectly, although if we told you how it would be a huge spoiler. "Well, your left hand's free / And your right's in a grip / With another left hand / Watch his right hand slip / Towards his gun, oh, no." Check out the song here.