Martin Henriksson – guitar (1999–present), bass (1989–1999, 2013)
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Dark Tranquillity was formed in 1989 by vocalist and guitarist Mikael Stanne and guitarist Niklas Sundin, who looked at their influences and then decided to form their own band under the name Septic Broiler.
Dark Horse Comics | Dark Shadows | Orchestral Manoeuvres in the Dark | The Dark Knight Rises | Dark Avengers | The Dark Side of the Moon | Poker After Dark | Transformers: Dark of the Moon | Dark Victory | Dark Funeral | dark energy | The Old Dark House | The Dark Tower (series) | The Dark Tower | My Beautiful Dark Twisted Fantasy | Dark Star Orchestra | Thor: The Dark World | Star Wars: Dark Forces | Perfect Dark Zero | Greek Dark Ages | Elvira, Mistress of the Dark | Dark Knight Court | Dancer in the Dark | Damon Dark | Alone in the Dark | Under Siege 2: Dark Territory | The Dark Avenger | The Dark | Star Wars Jedi Knight: Dark Forces II | Spider-Man: Turn Off the Dark |
Solution .45 entered Panic Room Studios in September 2009 to record its first full-length album For Aeons Past, with Dark Tranquillity vocalist Mikael Stanne writing lyrics for the majority of the album.
The album features lyrics and guest vocals from Dark Tranquillity singer Mikael Stanne.
Stanne along with Niklas Sundin formed Dark Tranquillity because they were bored, along with interest in metal from their influences.