Complex sentence: Megadeth is a thrash metal band from Los Angeles, California, which was formed in 1983 by guitarist Dave Mustaine and bassist David Ellefson shortly after Mustaine's dismissal from Metallica.
Split into simpler sentences: Megadeth is a thrash metal band from Los Angeles, California. The group was formed in 1983 by guitarist Dave Mustaine and bassist David Ellefson shortly after Mustaine's dismissal from Metallica.