Megadeth - So Far, So Good...So What!
After he left Metallica in 1983, guitarist/vocalist Dave Mustaine formed the thrash metal quartet Megadeth. Though Megadeth followed the basic blueprint of Metallica's relentless attack, Mustaine's group distinguished themselves from his earlier band by lessening the progressive rock influences, adding an emphasis on instrumental skills, speeding the tempo up slightly, and making the instrumental attack harsher. By streamlining the classic thrash metal approach and making the music more threatening, as well as making the lyrics more nihilistic, Megadeth became one of the leading bands of the genre during the mid-'80s and late '80s. Each album they released went at least gold, and they continually sold out arenas across America, in addition to developing a strong following overseas. By the early '90s, they had toned their music down slightly, yet that simply increased their following; all of their proper '90s albums debuted in the Top Ten.
In the years immediately following the release of So Far, So Good...So What!, Mustaine was impaired by his drug addictions. In early 1990, he was arrested for driving under the influence and entered a rehabilitation program. By the end of the year, he was not only sober, but he had reconvened the band; firing Young and Behler and replacing them with guitarist Marty Friedman and drummer Nick Menza. This lineup recorded Megadeth's fourth and most progressive album, Rust in Peace. The record peaked at number 23 on the American charts and went platinum. 1991 saw Metallica break through to the mainstream, and sensing the possibility for similar success, Mustaine followed suit in stripping down the band's sound, though it remained as technically perfectionistic as Rust in Peace. The result, Countdown to Extinction, was released in 1992, entering the charts at number two; the record went double-platinum and became the band's biggest hit, confirming that they had retained their audience in the wake of grunge.