At this year's Pitchfork Music Festival, everyone's favorite sweet-n-sad Minnesota band Low pulled out a cover of Rihanna's "Stay," which both mesmerized and confused the audience. (There was a lot of "I know this song… What is this song? Oh, it's this song!") Now the band has given the ballad the studio treatment, and it's goddamn gorgeous. Listen to it via YouTube below, or better yet head over to iTunes and buy yourself a digital copy—proceeds benefit Rock For Kids, which also happens to one of the A.V. Fest beneficiaries. Synergy!