Björk and Rosalía have shared their first official collaboration, a 75-second song protesting fish farming in Iceland. It exists only on YouTube and is appropriately titled — for now, at least — “help fight fish farming in iceland.” The Icelandic art-pop legend and Spanish flamenco-pop superstar sing a capella and in unison on the track, repeating a simple refrain: “Is that the right thing to do? / Is that the right thing to do? / Oh, I just don’t know / I just don’t know.” A statement shared by Björk explains that the track will be officially released later this month, with proceeds going toward the legal fees of the people on the front lines of an ongoing protest against a new fish farm in Fjord Seyðisfjörður.