Story highlights Vampire Weekend to play live at Sanders event on Saturday night in Iowa

The band, which lost a founding member on Tuesday, hasn't played live since August 2014

(CNN) Indie pop rockers Vampire Weekend are Iowa-bound on a mission to help Bernie Sanders convert a few unbelievers ahead of Monday's long-awaited caucuses.

The New York City-based band, minus recently departed founding member Rostam Batmanglij, will perform at a rally in Iowa City on Saturday night, their first live show since August of 2014 and their debut as a three-piece group.

Co-founder and frontman Ezra Koenig confirmed the date on Twitter late Wednesday morning, saying he was "going to Iowa this weekend to support @BernieSanders."

going to Iowa this weekend to support @BernieSanders — Ezra Koenig (@arzE) January 27, 2016

"Performance will be me, [Chris Tomson], Dave Longstreth, @lucasbros & the U of Iowa Hawkapellas," Koenig tweeted, "Bernie can call that Vampire Weekend if he likes," adding that the band -- along with Longstreth, the lead singer of Dirty Projectors -- would also "try and figure out a place to go talk & play some VW and Dirty Projectors songs in Iowa City outside the main event."

also, we are def gonna try and figure out a place to go talk & play some VW and Dirty Projectors songs in Iowa City outside the main event — Ezra Koenig (@arzE) January 27, 2016

The supergroup will be co-headlining at the University of Iowa Field House with Atlanta-based rapper Killer Mike, one of Sanders' most vocal supporters , and Foster the People, another popular indie band. Actor Josh Hutcherson and Kenny and Keith Lucas, the brothers behind FXX's animated comedy "Lucas Bros. Moving Co." are also slated for appearances, according to Sanders' website.

Read More