On this day in music history: August 12, 1991 - âMetallicaâ, the fifth album by Metallica is released. Produced by Bob Rock, James Hetfield and Lars Ulrich, it is recorded at One On One Recording Studios in North Hollywood, CA and Little Mountain Sound Studios in Vancouver, B.C., Canada from October 6, 1990 - June 16, 1991. Impressed with his work on label mate MĂśtley CrĂźeâs âDr. Feelgoodâ album, the veteran metal band hire producer Bob Rock to produce the follow up to their successful fourth album ââŚAnd Justice For Allâ. Musically, it differs from previous Metallica albums, with many of the songs having slower tempos than the bandâs trademark high velocity âthrash metalâ style. The recording sessions with Rock are often tense as he pushes the band members outside their normal comfort zone within the studio. The intense atmosphere spills over into their personal lives as well, with Hetfield, Ulrich and bassist Jason Newsted all winding up divorced from their spouses by the time recording is completed. In spite of all of the turmoil, the album is a huge critical and commercial success, launching Metallica into the mainstream on a worldwide basis. Nicknamed âThe Black Albumâ by fans (for its stark black cover featuring the bands logo and a coiled snake in dark grey print), it spins off six singles including âEnter Sandmanâ (#16 Pop, #10 Mainstream Rock), âSad But Trueâ (#98 Pop, #15 Mainstream Rock), âThe Unforgivenâ (#35 Pop, #10 Mainstream Rock) and âNothing Else Mattersâ (#34 Pop, #11 Mainstream Rock). The album wins a Grammy Award for Best Metal Performance in 1992. Available on vinyl only sporadically since its original limited run in the format in 1991, the album is issued equally limited pressings as a four LP set mastered at 45 RPM in 2008, and a two LP set by Simply Vinyl in 2000. It is remastered an reissued again as a double vinyl 180 gram LP set in 2015. âMetallicaâ spends four weeks at number one on the Billboard Top 200, and is certified 16x Platinum in the US by the RIAA, earning a Diamond Ceritification.