[[quoteright:330:http://static.tvtropes.org/pmwiki/pub/images/dark_tranquillity_03.jpg]]
[[caption-width-right:330:Metal.]]

Dark Tranquillity is one of the first (along with Music/InFlames and Music/AtTheGates) to create the Gothenburg Death Metal sound, one of the major factors in MelodicDeathMetal.

Founded by then-Rhythm Guitarist (later singer) Mikael Stane and lead guitarist Niklas Sundin in 1989, Dark Tranquillity is known for an ever-changing style. No two albums sound alike. While most of their albums are definitively in the MelodicDeathMetal vein, their use of keyboards, clean vocals, solos, breakdowns, and occasional female guest-singers (most notably Nell Sigland of TheCrest and TheatreOfTragedy) all varies wildly.

''The Gallery'' in particular, has been highly influential, and bands including KillswitchEngage consider it an inspiration.

Dark Tranquillity is also notable for having four of its original members - Mikael Stanne (Lead Vocals), Niklas Sundin (Lead Guitar), Martin Henriksson (Bassist, later Guitar), and Anders Jivarp (Drums) are still with the band.

Current Line-Up:
* Mikael Stanne (Vocals)
* Niklas Sundin (Lead Guitar)
* Martin Henriksson (Rhythm Guitar)
* Anders Jivarp (Drums)
* Martin Brandstrom (Electronics, Piano)

Former Line-Up:
* Anders Friden (Vocals on ''Skydancer'', their first album, left the band to lead InFlames)
* Frederik Johansson (Guitar)
* Mikael Niklasson (Bass)
* Daniel Antonsson (Bass on We Are the Void)

Discography:
* ''Skydancer'' (1993)
* ''The Gallery'' (1995)
* ''The Mind's I'' (1998)
* ''Projector'' (1999)
* ''Haven'' (2000)
* ''Damage Done'' (2002)
* ''Character'' (2005)
* ''Fiction'' (2007)
* ''We Are The Void'' (2010)
* ''Construct'' (2013)

'''Dark Tranquillity provides examples of:'''

* DerangedAnimation: The video for "Iridium", a MindScrew of assorted apocalyptic imagery to match the lyrics.
* GenreShift: Either subverted or played straight, depending on how you look at it. ''Projector'' seemed to be this, with acoustic guitar, piano, clean singing, and progressive and lighter songs compared to its predecessors ''The Gallery'' and ''The Mind's I'', but with ''Haven'', the band returned to a heavier death metal approach, yet kept the keyboards (pervasive) and clean singing (infrequent).
* IndecipherableLyrics: [[AvertedTrope Averted]]. Stanne is known both for his distinctive growling and his enunciation while doing so.
* MindScrew: The music video for "Monochromatic Stains," a ''Film/TheCabinetOfDrCaligari''-esque flood of random images in which the band never appears once.
* MohsScaleOfRockAndMetalHardness: The majority of their songs are at 9, but a handful of their later, more keyboard heavy songs get as low as 8. Much of ''Projector'' could be 7.
* SignatureStyle: Frequent time signature changes, slow to mid-tempo power riffs, low, breathy growling, symphonic elements, a Gothic-inspired sound, and unusual key signatures. Of the three big melodeath bands, they were the most [[NeoclassicalPunkZydecoRockabilly avant-garde]].
* SopranoAndGravel: Subverted. This trope is so popular in MelodicDeathMetal, yet even when Stanne sings clean (which doesn't happen on every album), his timbre is quite baritone.
** Played straight in "The Mundane and the Magic," a duet with Nell Sigland of TheatreOfTragedy
** Also in "Insanity's Crescendo", "Undo Control", "The Gallery", "...Of Melancholy Burning", a part of "Lethe", and arguably "A Bolt Of Blazing Gold" and "Through Ebony Archways" from ''Skydancer'' which feature faint female vocals.
* TropeMaker: Well, co-TropeMaker for MelodicDeathMetal along with AtTheGates and InFlames, with albums from Carcass and Sentenced being possible [[UrExample Ur Examples]].
* TropeCodifier: For the slower, more progressive school of MelodicDeathMetal as exemplified by them, Eternal Tears of Sorrow, Disarmonia Mundi, Insomnium, Music/TheAgonist, Music/{{Deadlock}}, Kokuyasou, Barren Earth, Persefone, DIO - Distraught Overlord, Music/ExistTrace and Music/{{Mayan}}.
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