Bismuth
There are multiple artists called Bismuth.
1) Bismuth is a two-piece mountain of doom and amp worship from Nottingham, UK. Joe does drums and Tanya does bass and vocals. For fans of Khlyst, Monarch!, Corrupted, Khanate and Burning Witch
http://bismuthslow.bandcamp.com/
2) The Dutch duo of experimental instrument builder Yuri Landman and multi-instrumentalist Arnold van de Velde.
http://www.hypercustom.com/bismuth.html
3) A Heavy Metal band based in North East England.