Steve Kimock’s 60th birthday celebration took place at Sweetwater Music Hall on Monday night as the guitarist welcomed out a series of guests for a superjam of sorts. Among them was Bob Weir, who came out to sit-in on “Dark Star” which is available to watch in full above.

Weir also joined the ensemble on tunes like “Good Morning Little Schoolgirl” and George Harrison’s “Beware of Darkness.”

The night, which served as a benefit for Came Winnarainbow, saw Kimock joined by guests like Jeff Chimenti, Dave Schools, John Kimock, Jay Lane, Bobby Vega and others. Wavy Gravy played host on the evening as the MC.