Dark Tranquillity is a Swedish melodic death metal band from Gothenburg. They are considered one of the pioneering acts of the Gothenburg metal scene, which also includes bands such as In Flames and At the Gates. Dark Tranquillity is regarded as the Gothenburg fathers in the film entitled Out of Nothing: A DT Documentary released by Century Media, which was filmed in their home town in April 2009.

Dark Tranquillity was formed in 1989 by current vocalist and then-guitarist Mikael Stanne, and guitarist Niklas Sundin, under the name Septic Broiler. Three additional members, Anders Fridén, Anders Jivarp and Martin Henriksson, later joined the line-up.

In 1990, the band recorded a demo entitled Enfeebled Earth before changing their name to Dark Tranquillity, which featured a largely thrash metal-influenced style of death metal, comparable to early Death. After releasing another demo entitled Rehearsal December 1990, the band changed its name to Dark Tranquillity, and released multiple demos, including Trail of Life Decayed in 1991 and A Moonclad Reflection in 1992, which both showed a progression into the more melodic nuances of death metal that the band would explore on their later studio releases.

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