With reporting by Brenna Ehrlich

In only a few weeks (March 20), we'll get to see the continuing adventures of Tris (Shailene Woodley) and Four (Theo James) back on the big-screen in "The Divergent Series: Insurgent." And what fans are looking forward to almost as much seeing Tris match wits -- and fear landscapes -- with the villainous Jeanine Matthews (Kate Winslet) is the soundtrack to the sequel.

Though we've known for a while that the score for the movie will be composed by Joseph Trapanese, there's been a huge amount of speculation about what will appear on the "Insurgent" soundtrack, especially considering the blockbuster line-up on the "Divergent" disc.

Good news, then: At least one artist will be returning, M83, and they're bringing HAIM with them, for a brand-new track titled "Holes In The Sky."

And holy strings, this song is a gorgeous orchestral slow-burn that showcases both the HAIM sisters' rich vocals and M83's incomparable composition skills. Listen to it now:

"We've been fans of Anthony Gonzalez and M83 for a long long time so when he reached out to have us sing on the song we were ecstatic," HAIM told MTV News in a statement. "We had the best time in the studio with him, it all happened so fast and was so easy and natural. We are so excited to be a part of this movie."

"See What I've Become," by Zack Hemsey was featured in the official trailer, but this is the first real taste that the new line-up of artists will be even more Dauntless than the first collection. By which we mean exciting, challenging and different, not covered in tattoos. But maybe that too.

Stay tuned to MTV News for more info on the "Insurgent" soundtrack -- and movie -- as it breaks.