The Download bound Alice In Chains have played a star-studded show at the start of their US tour.
Billy Corgan, Mark Lanegan and former Guns N' Roses and Velvet Revolver man Duff McKagan joined the grunge legends onstage at the Roxy Theatre in L.A.
The band has new vocalist William Duvall, who has replaced former singer Layne Staley who died of an overdose four years ago.