David Scott “Dave” Mustaine (born September 13, 1961) is an American musician. He was the original lead guitarist for the American heavy metal band Metallica and is the co-founder, rhythm and lead guitarist, and lead singer of the American thrash metal band Megadeth.
In May 1985, Megadeth released their first album, Killing Is My Business… and Business Is Good!, on Combat Records. That summer, the band toured the U.S. and Canada with Exciter. Guitarist Mike Albert replaced Chris Poland for a while because Poland was charged for possession of heroin. After Poland was released, he rejoined the band in October and the band then began recording their second studio album for Combat. On New Year’s Eve of that year, Megadeth played in San Francisco with Exodus and Metal Church. Metallica was the headliner. This was the only time Megadeth and Metallica were on the same card, until 1991.
In 1986, after recording Killing Is My Business…, Mustaine approached Jackson Guitars for a custom-built guitar. Jackson modified their existing Jackson King V model for Mustaine by adding 2 more frets to the standard 22 fret King V. In the 1990s the company began mass-producing a Dave Mustaine signature series Jackson King V, which continued into the early 2000s.