Photo by Chelsea Mae Hassman

Last night, Future Islands played a private party in Burlington, Vermont, organized by the car dealership website Dealer.com. As Stereogum reports via fan site ArcadeFireTube, Arcade Fire's Win Butler came out during "Seasons (Waiting On You)" to sing a few lines before turning and sauntering offstage. Check out video of his brief performance below, via Stereogum.

This isn't the first time that Butler has done "Seasons" with Future Islands; he came out onstage to do a bit of the song's second verse during a Montreal gig last fall.

Read our interview with Future Islands.

Watch Future Islands do "Seasons" at Primavera Sound 2014:

Watch Butler do a DJ Windows98 set at Pitchfork's SXSW party: