1 - Black metal band from the UK. Released a s/t EP in 2019, another EP "collapsar" in 2019 and a full length "ekpyrosis" also in 2019 with Sentient Ruin.
https://decoherence-uk.bandcamp.com/releases


2 - French brutal death-metal band formed in Paris in 1999. Their line-up includes a former member of Korum and two musicians also playing in Hectic Patterns (one of whom also sang for Drowning). They released their first album, How We Kill Schrödinger's Cat, in February 2009.
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Artist biography from last.fm