The conflict in "Captain America: Civil War" will bring out sides of Marvel's heroes that we haven't seen before, and the latest spot for the film does too. The clip, which comes via Mashable, features a stirring speech from film lead Chris Evans as he's slowly flanked by a quartet of harmonizing heroes. As Evans runs through Steve Rogers' origin and his transformation into the superhero Captain America, he's joined by Robert Downey Jr., Anthony Mackie, Elizabeth Olsen and Chadwick Boseman as they hum "The Battle Hymn of the Republic." And there's even a walk-on appearance by Sebastian Stan who, well, walks on.

EXCLUSIVE: @RobertDowneyJr, @AnthonyMackie & the #CaptainAmericaCivilWar cast join @ChrisEvans for a battle hymn.https://t.co/oFmqM6LnqX- Mashable (@mashable) May 5, 2016

Directed by Joe and Anthony Russo and starring Chris Evans, Robert Downey Jr., Scarlett Johansson, Anthony Mackie, Sebastian Stan and more, "Captain America: Civil War" opens on May 6.