By now, you've probably heard about the Colorado Symphony's latest collaboration. After several lauded pairings with beloved local acts like DeVotchKa and Nathaniel Rateliff, with whom the players successfully teamed up at this year's Westword Music Showcase, the Symphony backed the Lumineers on a few songs up at Red Rocks. Last week at Boettcher, the two rehearsed the songs, which were charted by Tom Hagerman. Open Air captured the whole rehearsal and will broadcast it later this week. Meanwhile, here are some some choice shots from our photographer Brandon Marshall.

See also: Review + photos: The Lumineers at Red Rocks, 9/15/13

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

Continue on for more shots from the Lumineers rehearsal with the Colorado Symphony

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

Continue on for more shots from the Lumineers rehearsal with the Colorado Symphony

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

See also: Photos: Colorado Symphony and Nathaniel Rateliff working on Beck's Song Reader

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