Metallica with Cliff Burton and Dave Mustaine

On March 5, 1983, Cliff Burton played his first concert with Metallica after replacing Ron McGovney in December of 1982. Just a bit over one month later, the thrash upstarts would undergo another lineup change as they jettisoned Dave Mustaine from their ranks, later plucking Kirk Hammett from like-minded Bay Area thrashers Exodus.

Source: Loudwire