Who shared production credit with Bob Rock on Metallica's 1991 album commonly called The Black Album?

James Hetfield and Lars Ulrich shared production credit with Bob Rock on Metallica's 1991 album commonly called The Black Album.

The album's production credit lists Bob Rock, James Hetfield, and Lars Ulrich. Rock was the outside producer who helped reshape the band's recording methods and refine its sound, while Hetfield and Ulrich represented the band's central songwriting and rhythmic partnership.

This collaboration was important because Metallica's members were not simply handing the project over to a producer. Rock challenged the group to improve its arrangements, performances, and studio discipline, while Hetfield and Ulrich remained deeply involved in the musical direction and final result.

Kirk Hammett and Jason Newsted performed on the album but are not the two band members named alongside Rock in the production credit. Cliff Burton had died before the sessions, and Dave Mustaine was a former member, so neither belongs among the album's production team.