Gallhammer is a Japanese black metal band from Tokyo formed in 2003. Notably, all of its members are female, which is a rare occurrence in the black metal genre.
The band's main musical influences include Hellhammer and Amebix.
Gallhammer was formed in Tokyo, Japan in 2003. The original idea of the band was formed in 2002, following bassist/vocalist Vivian Slaughter's desire to create a band that based itself around the dark and morbid musical atmospheres of the seminal Swiss black metal band, Hellhammer. The other members, Risa Reaper (drums/vocals) and Mika Penetrator (guitar/vocals), joined in 2003. When the band started out, none of the members had even learnt how to play their instruments, as they had all previously been vocalists