Maynard Keenen, Adam Jones, Danny Carey and Paul D’Amour formed Tool and released their first EP in 1992. Their full-length followup, Undertow, went gold and the band no doubt received a boost from their riveting set on the 1997 Lollapalooza tour.

D’Amour has since been replaced by Justin Chancellor but the rest of the original members remain.

Although Tool have toured regularly since 1995, they took some time off in 1999 and 2000, playing a grand total of one show. The break afforded frontman Keenen an opportunity to work with his other band, A Perfect Circle, and for Carey to do the same with his side-project, ZAUM.

In May, Tool released a new album, Lateralus, which entered the Billboard album chart at No. 1. The band’s management reports that a full-scale U.S. tour is in the works for this fall.

Tool’s lauded tour-mates in King Crimson remain big crowd pleasers even though the band has been around longer than Tool members have been alive.

Formed in the late ‘60s by guitarist extraordinaire Robert Fripp, King Crimson helped pioneer the progressive rock movement. The band’s experimental edge can be heard in Tool’s music, making the pairing more logical than it might first appear.