The Throwing Muses’ trajectory of out of left field alterna-art-pop has been anything but normal, which makes perfect sense when you consider bandleader Kristin Hersh’s mental health rollercoaster over the years. The band broke up in the late 1990’s only to return in the early aughts with just as much fire and intensity as when it had begun two decades prior. The return was an aberrant blip because the Muses haven’t been heard from since, which makes a forthcoming 32-song double album even more beguiling. The record is being packaged with a photo art book and musings (intended) by Hersh. The first fruits of those mammoth sessions, “Sleepwalk-1,” can be heard below. And it rocks with stuttering gusto, replete with Hersh’s maniacal vamping. Purgatory/Paradise is out November 11, 2013 on the Harper Collins subsidiary It Books.