A score of artists including Death Cab For Cutie, Jeff Tweedy, Mavis Staples and the Tune-Yards are set to join The Decemberists for their two-day Travelers' Rest Festival in August.
The other bands announced on Tuesday include Whitney, Parquet Courts, Tinariwen, I'm With Her, Waxahatchee and Lucy Dacus.
The line up, curated by the headlining band, ultimately will feature more than 15 artists on two stages at the Big Sky Brewing Company Amphitheater on Aug. 4-5.
In a news release, Helena native and Decemberists frontman Colin Meloy said, "We really had a blast last year. It was fantastic to play a part in bringing those great bands to the Big Sky State."
The Decemberists are releasing a new album, "I'll Be Your Girl," in March.
While early bird tickets have sold out, two-day general admission passes are $95.50 and two-day VIP passes are $179.50.