灰野敬二
is a Japanese experimental rock band formed in 1992 in Tokyo and composed of drummer Atsuo, guitarist/bassist Takeshi, and guitarist/keyboardist Wata. All three members participate in vocal performance. Boris has released more than twenty studio albums on various labels around the world, as well as a wide variety of live albums, compilations, EPs, singles, and collaborative albums. They have collaborated with acts such as Sunn O))), Merzbow, Keiji Haino, and guitarist Michio Kurihara.