Isis are a Los Angeles, California-based post-metal band, originally formed in Boston, Massachusetts in 1997. They have released five full-length albums, five extended plays, four live albums, two singles and have collaborated on numerous other projects. Several sessions of experimentation in Boston, Massachusetts led friends Aaron Turner (guitar/vocals; also the owner of Hydra Head Records and its subsidiary, HH Noise Industries), Jeff Caxide (bass guitar), Chris Mereschuk (electronics/vocals) and Aaron Harris (drums) to form Isis in late 1997. As Turner states, "Isis formed as a result of the dissatisfaction with past bands of the founding members [Aaron Harris, Jeff Caxide, Aaron Turner, and Chris Mereschuk]. None of us were happy with what we were doing musically at the time, two of us lived together, we had similar tastes and similar record collections." Isis released a demo and their first EP, Mosquito Control, in 1998, with this line-up. After an East Coast tour in the summer of 1998 where they were joined by Randy Larsen of Cable on guitar, Mereschuk left the band.