Gallhammer

Gallhammer () were a Japanese extreme metal group that drew on blackened crust, black metal, doom metal, and crust punk. They formed in Tokyo in 2003 and released three studio albums.
The current group lineup is Vivian Slaughter (vocals, bass guitar) and Lisa Reaper (vocals, drums); the original lineup included Mika Penetrator (vocals, guitar).
Biography.
Their first recording, a free demo tape limited to 30 copies, was distributed at their first gig at Koiwa Death Fest Vol.2, around March 2003, in Japan. In July of the same year, the self-titled demo was released. By April of the following year, they had released another demo, "Endless Nauseous Days", and were working towards their debut full-length CD. The 8-track album, entitled "Gloomy Lights", was released in November 2004 through Hello From The Gutter Records.
In January 2006, Gallhammer was signed to Peaceville Records, on the recommendation of Darkthrone. A CD/DVD pack, entitled "The Dawn of...", was released, containing a CD, demo and rehearsal footage, and a DVD recording of Gallhammer performing in Okayama and five concerts in Tokyo.
Gallhammer released their second full-length album, "Ill Innocence", through Peaceville Records in September 2007, followed by a European tour. In March 2008, they did a second European tour. They also played at the Inferno Metal Festival in June.
For their third LP "The End" released in 2011 their guitarist, Mika Penetrator, was no longer present, but nevertheless the band chose to continue as a bass-drums duo. For allmusic.com´s reviewer Phil Freeman "this has changed their musical style quite a bit; the thrashing punk metal of 2004's "Gloomy Lights" and 2007's "Ill Innocence" can still be heard on songs like "Rubbish CG202" and "Entropy G35," but tracks like "Aberration," "Sober," and the title cut are totally different—slow, sludgy death marches that owe more to Flipper and the Melvins than black metal."
Gallhammer appeared in Nocturno Culto's film "The Misanthrope: The Existence of Solitude and Chaos".
Influences.
In an interview with "Contraband Candy", Vivian Slaughter cited Hellhammer, Celtic Frost, Amebix and Burzum as Gallhammer's main musical influences. 
Slaughter is also a passionate fan of Judas Priest, and once called Corrupted "the greatest band in the world." She says she was first inspired to play music after seeing Napalm Death and Painkiller in concert.
Lisa Reaper is a fan of old school techno, krautrock, Kraftwerk and Laibach.
The band's other influences include Joy Division, Antisect, Carcass, Cathedral, Morbid Angel, and Scorn. The group is also inspired by Japanoise and have collaborated with Incapacitants.
While the group borrows from crust and anarcho-punk, they do not identify with a particular political outlook.