The Doomstar Requiem – A Klok Opera Soundtrack is the fourth full length album by death metal band Dethklok, from the Adult Swim animated series Metalocalypse. It was released digitally on October 27, 2013. It will be released on LP and CD on March 18, 2014. It is the soundtrack album to the Metalocalypsespecial of the same name.
The album features a 50 piece orchestra under the composition of Bear McCreary. There is also a "making of" feature included with the album. For the first time, Dethklok's live guitarist Mike Keneally was featured on a studio album.
The first single off the album, "Blazing Star", was released on Loudwire on October 17, 2013. "Blazing Star" is the only official Dethklok song on the album, whereas the rest of the tracks are considered Metalocalypse songs.
The album was initially released as a digital download, with a physical CD and limited edition LP version to be released on March 18, 2014. The digital download version of the album was released two days earlier than the standard release date and the CD version was released three months earlier than the standard release date exclusively on Brendon Small's website. The digital version of the album comes with a downloadable 34 page libretto of the special.
The Times Leader gave the album (as well as the special itself) a favorable review, stating, "This 'rock opera' should essentially be approached with a keen sense of humor, although the tunes are most enjoyable as a serious, full-blown metal/Broadway juggernaut".