At which Los Angeles studio was Metallica’s 1991 album commonly called The Black Album mainly recorded?

Metallica’s 1991 album commonly called The Black Album was mainly recorded at One on One Recording Studios in Los Angeles.

The band began work there in October 1990, with the recording period continuing into 1991. The sessions lasted roughly eight months and became known for arguments between the band and producer Bob Rock over performances, arrangements, and production choices.

Additional work took place elsewhere, including a short period at Little Mountain Sound Studios in Vancouver and later overdubbing and mixing at A&M Studios in Hollywood. Those additional locations can cause confusion when the album’s recording history is summarized.

One on One was therefore the principal studio associated with the album, not the only facility involved. The finished record reflected Rock’s effort to capture a more direct, live-band feel than on Metallica’s earlier releases.