Themes from William Blake's The Marriage of Heaven and Hell is the fourth studio album by Norwegian experimental collective Ulver. Produced with Kristoffer Rygg, together with Knut Magne Valle and Tore Ylwizaker, it was issued on December 17, 1998 via Jester Records. It is a musical setting of William Blake's poem The Marriage of Heaven and Hell. The album blended electronics, industrial music elements, progressive metal and avant-garde rock, adding ambient passages, following Blake's plates as track indexes. Stine Grytøyr, Ihsahn, Samoth and Fenriz all feature as guest vocalists.The album received widespread acclaim from critics within both the rock/metal and alternative music press - being awarded Album of the Month in several high-profile magazines such as Terrorizer, Metal Hammer, and Rock Hard and ranked very highly in their end of year's best polls. However, the album’s transitional nature perhaps alienated many fans of the band’s first three albums - causing a backlash from the black metal scene.Controversial director of films Kids and Gummo, Harmony Korine, recently commented, alluding to The Marriage of Heaven and Hell: "There's a real lineage from a composer like Wagner to a band like Ulver."