 Johann Wolfgang von Goethe's famous poems "Der Erlkönig" (1778) and "Das Heidenröslein" (1771) for the songs "Dalai Lama" and "Rosenrot", respectively.Several of their songs are related to controversial and taboo subjects such as sadomasochism, homosexuality, intersexuality, incest, pedophilia, necrophilia, cannibalism, pyromania, religion and sexual violence.Also several of their songs are allegedly inspired by real-life events.