Apocalyptica, the Finnish all-cello classical crossover success-story, is looking to take it to the next level with their new single "Bittersweet", due out on November 29. The track features guest vocals from what I suppose are two of Finland's biggest rockstars: Lauri Ylönen of The Rasmus and Ville Valo of HIM. The song was written as a collaboration between the band and the two frontman and is the first single from the band's new album, due out early next year. A video was filmed in Helsinki with director Antti Jokinen (Nightwish, Celine Dion, Shania Twain) as well.