What happens when you combine Little Shop of Horrors and German romantic opera? Something like the Komische Oper’s production of Der Vampyr, maybe, an unusual concoction of Grand Guignol and postmodern metatheater. Granted, this might not be quite what one would expect from Marschner, a German Romantic active a little after Weber. (Today Marschner is today probably best known for the prominent appearance of his Hans Heiling in Thomas Mann’s Doktor Faustus.) But hey, why not?