Ulver is a Norwegian experimental electronica band founded in 1993, by vocalist Kristoffer Rygg. Their early works, such as debut album Bergtatt, were categorised as folklore-influenced black metal, but the band has since evolved a fluid and increasingly eclectic musical style, blending genres such as experimental rock, electronica, ambient, trip hop, symphonic and chamber traditions, noise, progressive and experimental music into their oeuvre. 1997 marked their international debut with the release of their third album Nattens madrigal through German label Century Media. However, following discord with the label, Rygg formed his own imprint, Jester Records, in 1998.

Daniel O'Sullivan is a British musician and composer from Manchester, best known for playing in experimental art-rock bands Grumbling Fur, Guapo, Miasma & the Carousel of Headless Horses, Ulver, Sunn O))), Æthenor, Laniakea, Miracle, Mothlite, and This Is Not This Heat. He's also released solo work under his own name.