Rob Gregoire has 4 Alice In Chains concerts.

Alice in Chains is an American grunge/ alternative metal band from Seattle, Washington, formed in 1987 by guitarist/vocalist Jerry Cantrell and drummer Sean Kinney, who then recruited bassist Mike Starr and lead vocalist Layne Staley. Starr was replaced by Mike Inez in 1993. William DuVall joined the band in 2006 as co-lead vocalist and rhythm guitarist, replacing Staley, who died in 2002. The band took its name from Staley's previous group, the glam metal band Alice N' Chains.