American rock band formed in Seattle, Washington, in 1990. The band's lineup consists of founding members Jeff Ament, Stone Gossard, Mike McCready, and Eddie Vedder, as well as Matt Cameron, who joined in 1998. Keyboardist Boom Gaspar has also been a touring/session member with the band since 2002. Jack Irons, Dave Krusen, Matt Chamberlain and Dave Abbruzzese are all former drummers for the band. Pearl Jam has outsold and outlasted many of its contemporaries from the early 1990s, and is considered one of the most influential bands from that decade, dubbed "the most popular American rock and roll band of the '90s"