Yngwie Malmsteen started performing in the band Steeler. Also in that band was vocalist Ron Keel (later on Keel) and former W.A.S.P. bassist Rik Fox. The band produced only one album, Steeler.
Dave Mustaine, lead guitarist for Metallica, is fired for drug/alcohol abuse, and is replaced by Exodus guitarist Kirk Hammett, after which he formed the L.A. thrash metal band Megadeth.