Bob Rock directed the production of Metallica's The Black Album. He is credited as the album's producer, while Randy Staub handled engineering and Mike Tacci served as assistant engineer.
Rock's involvement was prompted by his work on Mötley Crüe's Dr. Feelgood, whose polished but forceful sound impressed Metallica. He pushed the band toward a more unified studio performance instead of building every rhythm part separately.
The producer's role is often confused with the other specialists credited on the record. Michael Kamen arranged the orchestra for “Nothing Else Matters,” and Randy Staub engineered the sessions, but neither was the album's producer. Rock's production helped give the record its broad, dense, and radio-ready sound.