On the weekend of May 11, art pop outfit Hundred Waters will host their fourth annual FORM Arcosanti festival in Arcosanti, AZ. This year, the lineup includes acts ranging from Mitski, Alex G, Chance The Rapper, Blood Orange and SOPHIE. Hundred Waters will play a set too, of course, and they've shared a new track ahead of the festival. It's a fragile ballad titled "Mushroom Cloud" that the band says was finished just days ago. Check it out below.