Matt Sorum part of Neurotic Outsiders
1990–1997: Guns N' Roses, Slash's Snakepit and Neurotic Outsiders.
In 1989, Slash saw Sorum live with The Cult on the Sonic Temple tour and, shortly after, Sorum joined Guns N' Roses as Steven Adler's replacement.
Sorum with Guns N' Roses can be heard on the 1990 cover of the Bob Dylan track "Knockin' on Heaven's Door", the albums Use Your Illusion I, Use Your Illusion II  (excluding the track "Civil War"), "The Spaghetti Incident?", the 1994 cover of The Rolling Stones track "Sympathy for the Devil" and the majority of Live Era: '87-'93. Sorum featured fully on the lengthy Use Your Illusion Tour, drumming on all of the 194 shows, 9 legs and to over 7 million fans.
In 1994, Sorum formed Slash's Snakepit with Slash and Gilby Clarke and drummed on their debut album It's Five O'Clock Somewhere. Sorum also lent his drumming skills in the theme song for the 1995 20th Century Fox film, Mighty Morphin Power Rangers: The Movie. That same year, Sorum formed the supergroup Neurotic Outsiders, which featured bandmate Duff McKagan. In 1996 they released their only album, the self-titled Neurotic Outsiders. John Taylor (Duran Duran) and Steve Jones (Sex Pistols) also participated on this album, and toured behind it. Early performances featured guest spots by Simon Le Bon (Duran Duran), Slash, and Billy Idol.
In 1997, Sorum was fired from Guns N' Roses by Axl Rose after an argument with Rose over the inclusion of Paul Tobias in the band. Sorum claimed that Tobias made disparaging remarks about a Slash performance on TV, resulting in him blowing up at Tobias. Slash had recently left the band, and Sorum told Axl “without Slash there is no Guns N’ Roses”, to which Rose asked if he was going to quit the band. Sorum said no, then Rose fired him.In April 2006, nine years after leaving Guns N' Roses, Sorum re-established his friendship with the band's lead singer Axl Rose.
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