Two summers ago, The Cave Singers performed a brand new song for KEXP backstage at Pickathon. So new, it didn’t even have a name. A few weeks ago, they made their return to the festival and played that no-name song, now called “Haller Lake,” as well as “Swim Club,” both found on 2011’s No Witch. They seem right at home in the Bunny Glade. Watch above.