Vampire Weekend’s Ezra Koenig and Dirty Projectors’ Dave Longstreth are performing at a big Bernie Sanders rally in Iowa City, Iowa tonight, backed up by VW drummer Chris Tomson, the Lucas Brothers, and a university a cappella group. As a warmup before the main event, the group played a few songs to Bernie supporters at the local cafe Java House, including “Cape Cod Kwassa Kwassa,” “Unbelievers,” and a sing-along of “This Land Is Your Land.” Watch some clips below.

cape cod kwassa kwassa #vampireweekend A video posted by Clara Lindner (@clara.lindner) on Jan 30, 2016 at 4:28pm PST

A video posted by Vampire Weekend (fan account) (@ezrafactory) on Jan 30, 2016 at 11:32am PST

. @arze #VampireWeekend & @dirtyprojectors getting kids stoked at this coffee shop in #Iowa #vampireweekendatbernies A video posted by Luis Calderin (@luis_calderin) on Jan 30, 2016 at 2:44pm PST

#ThisLandIsYourLand. 🇺🇸 @arze #vampireweekendatbernies #FeeltheBern A video posted by Luis Calderin (@luis_calderin) on Jan 30, 2016 at 3:34pm PST

VAMPIRE WEEKEND & THE DIRTY PROJECTERS @thejavahouseic @arze A video posted by Clara Lindner (@clara.lindner) on Jan 30, 2016 at 4:10pm PST

Some coffeehouse jams with Vampire Weekend and Dirty Projectors. #StudentsForBernie A photo posted by Ty Bugbee (@tybugbee22) on Jan 30, 2016 at 3:33pm PST

UNIVERSITY OF IOWA HAWKAPELLAS 🔥🔥 rooting for them in the ICAA Great Lakes Quarter-Final 🙏🏼 A video posted by Ezra Koenig (@arze) on Jan 30, 2016 at 2:01pm PST

caucus season brings everyone and their mom (and @arze) to Iowa #vampireweekend A photo posted by Hanna Howard (@hanna_m_howard) on Jan 30, 2016 at 3:27pm PST

Vampire Weekend for Bernie Sanders 🙌🏻?? A photo posted by Ja$on (@jgrobby) on Jan 30, 2016 at 2:27pm PST

i'm just here for the coffee A photo posted by elaine leigh (@elaine.leigh) on Jan 30, 2016 at 2:36pm PST

So I went to a concert today. A photo posted by Erin Jean Belding (@erin_jean_belding) on Jan 30, 2016 at 4:31pm PST

still reeling from the fact that I was this close to @arze. I mean, close enough that I was almost hit in the face with his guitar on several occasions. 🎸 // #ezrakoenig #ezra #vampireweekend #javahouse A photo posted by Diamond Kathleen (@thewinedarksea) on Jan 30, 2016 at 3:03pm PST

UPDATE: You can watch the full performance from the rally below, starting around 46:20.

Here Sanders sings “This Land Is Your Land” with the band: