Pearl Jam is an American rock band formed in 1990 in Seattle, Washington. Since its inception, the band's line-up has included Eddie Vedder (lead vocals), Mike McCready (lead guitar), Stone Gossard (rhythm guitar), and Jeff Ament (bass). Since 1998, the band has also included drummer Matt Cameron (also of Soundgarden). Boom Gaspar (piano) has also been a session/touring member with the band since 2002. Drummers Dave Krusen, Matt Chamberlain, Dave Abbruzzese, and Jack Irons are former members of the band.