Metallica primarily recorded The Black Album at One on One Recording Studios in Los Angeles.
The main sessions ran from October 6, 1990, to June 16, 1991. The band also worked for about a week at Little Mountain Sound Studios in Vancouver, British Columbia, and completed additional overdubs and mixing at A&M Studios in Hollywood.
Producer Bob Rock encouraged the members to record more collaboratively than on earlier albums. Instead of constructing many parts separately, the band aimed for a stronger live feel by performing together in the studio.
The sessions became famous for their demanding atmosphere. Metallica's perfectionism led to numerous takes, while Rock pushed the musicians toward different recording methods, stronger vocals, and a more prominent bass sound.