Thanks to a newfound interest in music, Princess Bubblegum joins Marceline's paranormal rock band for a tour across the land of Ooo! But when they're threatened by everything from scenesters to beasts born of self-doubt, can they stay together long enough to make it to the RADDEST GIG EVER?! Written and drawn by acclaimed cartoonist Meredith Gran (OCTOPUS PIE) and featuring back-up stories from some of the hottest independent talent in comics today, including Jen Wang (Koko Be Good), Faith Erin Hicks (Friends with Boys) and many more!.