Reissue. Themes from William Blake's The Marriage of Heaven and Hell is the fourth studio album by Norwegian experimental electronica band Ulver. Produced with Kristoffer Rygg, together with Knut Magne Valle and Tore Ylwizaker, it was originally released in 1998. It is a musical adaptation of William Blake's poem The Marriage of Heaven and Hell. The album blends electronics, industrial music elements, progressive metal, avant-garde rock and ambient passages, following Blake's plates as track indexes. Stine Grytoyr, Ihsahn, Samoth and Fenriz all feature as guest vocalists.