Twilight of the Gods is the sixth studio album by Swedish extreme metal band Bathory. It continues the exploration of the newly created Viking metal style, and also displays heavy epic doom and classical influences; it is titled after an opera by Wagner. It is a mid-tempo, more acoustic album than previous Bathory releases, though it follows on from the Hammerheart album. Of significance is Quorthon's total control of the album, playing all electric and acoustic guitar, keyboards, bass, and drum programming. The background vocals are a particular feature of this album, with Quorthon multi-tracking himself, as he did on the Hammerheart album, though this time in a more sophisticated way, sounding like a whole chorus at times. The song entitled Hammerheart is based on a melody from Gustav Holst's The Planets. Specifically, it is Quorthon's own "rearrangement" of the middle section of the fourth movement, Jupiter.