Biography
There are multiple bands with this name:
1) Abyssal is an atmospheric blackened death/doom metal band from the UK. Since forming in 2011, they have released three full-lengths. They are currently signed to Profound Lore Records.
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Their music will likely appeal to fans of Mitochondrion, Ævangelist, Desolate Shrine, Portal, Impetuous Ritual, Embrace of Thorns, Auroch, and/or Bölzer.
Bandcamp: http://abyssal-home.bandcamp.com/
Bigcartel: http://abyssal.bigcartel.com/
2) Abyssal is a Black Metal band from Sweden.
3) Abyssal is a Thrash Metal band from Brazil.
4) Abyssal is a Punk band from UK
5) Abyssal was a black metal band from Finland.
6) Abyssal is a death metal band from France.
7) Abyssal is a post-metal/funeral doom/sludge metal band from Tijuana, Mexico. They changed their name to be with all caps and spaces, A B Y S S A L.
Bandcamp: http://abyssaltj.bandcamp.com/
8) Abyssal is a dark ambient/drone project of Dutch producer TREVØR.
Biography text from Last.fm, available under CC BY-SA.