Soundgarden is giving away a free song if you can solve a puzzle. The song in question is a remix of “The Telephantasm,” which first appeared on their 2010 compilation album of the same name and will appear on their upcoming rarities album Echo Of Miles: Scattered Tracks Across The Path. In exchange for an e-mail, you can solve the puzzle, which is pretty easy: it’s a simple matching game with some flip-over cards and shouldn’t take you that long to do. You can solve the puzzle right here.

Echo Of Miles: Scattered Tracks Across The Path is out 11/24 via A&M.