Which studio hosted most of the recording sessions for Metallica’s 1991 album, commonly called The Black Album?

Most recording sessions for Metallica’s 1991 album, commonly called The Black Album, took place at One on One Recording Studios in Los Angeles.

The band began recording there in October 1990 and worked through an extended production period. The sessions lasted about eight months overall, reflecting the group’s perfectionism and the demanding collaboration with producer Bob Rock. The main Los Angeles facility is often described as being in North Hollywood.

The album was not recorded entirely at one location. Metallica also spent about a week at Little Mountain Sound Studios in Vancouver, British Columbia. Final overdubs and mixing took place over four weeks at A&M Studios in Hollywood during June and July 1991.