Unleashed is a Swedish death metal band that was formed in 1989 by Johnny Hedlund in Stockholm. Common lyrical themes found in the band's music include Viking culture, recollection of a pre-Christian world, and Norse folklore. A number of their recent songs also contain references to J. R. R. Tolkien. Unleashed is considered one of the "big four" of Swedish death metal.

Death metal is an extreme subgenre of heavy metal music. It typically employs heavily distorted and low-tuned guitars, played with techniques such as palm muting and tremolo picking; deep growling vocals; aggressive, powerful drumming, featuring double kick and blast beat techniques; minor keys or atonality; abrupt tempo, key, and time signature changes; and chromatic chord progressions. The lyrical themes of death metal may include slasher film-style violence, political conflict, religion, nature, philosophy, true crime and science fiction.