Activist, entertainer and legendary music fan Wavy Gravy, aka Hugh Romney, will celebrate his 80th birthday this spring, and his party will feature performances, food, art, a silent auction and more.

The celebration will take place at the SOMO Village Event Center in Rohnert Park, CA, on May 22. Set to play are Steve Earle, New Riders of the Purple Sage, John Popper, Achilles Wheel, The T-Sisters, Dead Winter Carpenters, Grateful Bluegrass Boys, Sambadrop, Clown Conspiracy and more.

All proceeds will go to the Seva Foundation, a Berkeley-based non-profit started by Romney that promotes eye care and blindness prevention around the world.