Metallica is a former thrash and speed metal turned garbage-core band from California. The band was arguably the biggest name in metal in the 80's and 90's.
The band's original lineup consisted of James Hetfield on rhythm guitar and lead vocals, Lars Ulrich on drums, Cliff Burton on bass, and Dave Mustaine on lead guitar.
They played the L.A. club scene for awhile, but were despised for not being a glam metal act. Dave Mustaine was soon booted from the band and went on to form the also highly successful thrash metal band; Megadeth as revenge. Mustaine's replacement was Kirk "Wah-Wah" Hammett.