Maynard James Keenan has been celebrating his 60th birthday all month with two of his bands — A Perfect Circle and Puscifer — along with Primus on the “Sessanta” tour. On Saturday night (April 20th) at the Hollywood Bowl in Los Angeles, fans were treated to all three of Keenan’s bands when Tool gave a surprise performance toward the end of the concert.

The tour usually has a no-video policy until the last song of the night, which is Puscifer’s “Grand Canyon,” but Keenan said from the stage that he would permit filming of the next song because he had “picked up some strays” to join him onstage. At that point, Tool’s Danny Carey, Adam Jones, and Justin Chancellor walked out to the delight of the fans.

Get Sessanta Tickets Here

Keenan joked, “Danny’s up there, like, ‘You call this a fuckin’ drum set! Where’s the rest of it?’,” alluding to the Tool stickman’s usual elaborate setup. Then, Tool launched into “Ænema” with Primus’ Les Claypool joining Keenan on vocals.

That wasn’t the only surprise at the Los Angeles gig. Earlier in the evening, original A Perfect Circle members Paz Lenchantin (bass) and Troy Van Leeuwen (guitar) joined APC for a performance of “Judith.”

The concert also marked the last one on the outing for A Perfect Circle drummer Josh Freese, who rejoined the band for the tour, but noted before it launched that he would only stay on through the Hollywood Bowl show due to his commitments with Foo Fighters. Puscifer’s Gunnar Olsen will take over behind the kit for APC during the remainder of the tour.

The “Sessanta” tour runs through a May 4th show in Queens, New York, with tickets to the remaining dates available here.

See Tool’s surprise performance and A Perfect Circle’s reunion with Lenchantin and Van Leeuwen below, followed by photos from the “Sessanta” tour kickoff in Boston earlier this month.

Photo Gallery – A Perfect Circle, Primus, and Puscifer kick off the “Sessanta Tour” in Boston (click to expand and scroll through):