Mac DeMarco loves to debut new music inconspicuously in acoustic radio sessions. Maybe it's because it's a chance to let his irony-laden guard down. He first announced Salad Days on Edmonton radio, and now he's used an appearance on a podcast called A Pint of Cacophony to cover modern troubadour Angel Olsen. Where Mac's covers are usually off the cuff piss-takes of bands like BTO, Limp Bizkit and Metallica, his tongue is farther from his cheek than you usually see in a DeMarco live appearance. Instead, his take on "Lights Out" is surprisingly sincere, and, save for the occasional "oops" and mouth-sung guitar part, almost as breathtaking as the original slow-burner.