Ethan Miller leads a bevy of Bay Area artists celebrating the 50th anniversary of the Grateful Dead’s ‘Aoxomoxoa’ at The Chapel in San Francisco on Oct. 28, 2019. Photos: Michael Smyth/Staff. SAN FRANCISCO — One expects to encounter a certain amount of enthusiasm for The Grateful Dead here. The Bay…

Dinosaur Jr. performs at Slim’s in San Francisco on Oct. 28, 2019. Photos: Joaquin Cabello. SAN FRANCISCO — Last November, when Dinosaur Jr. frontman J Mascis played Slim’s in support of his solo album, the Bay Area was shrouded in several serious wildfires. In a strange case of deja…