After welcoming Bob Weir as a part of Joe Russo’s Almost Dead’s stop in Oakland, Tom Hamilton collaborated with his future Muertos Con Queso bandmate at Sweetwater Music Hall as Weir sat in with the American Babies during their show on Friday night.

Playing a special Masquerade Ball which saw the American Babies pay tribute to the Grateful Dead, Weir emerged for a few of his tunes from Blue Mountain as well as Dead cuts like “Mississippi Half Step,” “Loser,” “Truckin’” and “Scarlet Begonias” into “Fire on the Mountain.”

Watch a clip of “Mississippi Half-Step” above. Weir and Hamilton will meet again in January when Bill Kreutzmann, Dave Schools and Jeff Chimenti join the fold as a part of the destination event dubbed Los Muertos Con Queso.