Last night, Sigur Rós performed in their homeland for the first time in four years for the Iceland Airwaves festival. Marking this special occasion, the band treated the crowd by performing a brand new song, titled “Brennisteinn.” Valtari may have only been released just a few months ago, but might this new song point to yet another album from Sigur Rós? Watch the video of them performing “Brennisteinn” below.