Metallica is a band based in America.
Metallica . As of January 2016 , Metallica is the third-best-selling music artist since Nielsen SoundScan began tracking sales in 1991 , selling a total of 59.12 million albums in the U.S. Metallica collaborated over a long period with producer Bob Rock , who produced four of the band 's studio albums between 1990 and 2003 and served as a temporary bassist during the production of St. Anger . St. Anger is the eighth studio album by American heavy metal band Metallica , released on June 5 , 2003 , by Elektra Records .