Edward Sharpe & The Magnetic Zeros, Steve Kimock & Friends, The California Honeydrops and Hot Buttered Rum will perform at Wavy Gravy’s 79th birthday party. The show, which will be a benefit for Wavy’s SEVA Foundation, will take place on Sunday, May 17 at the Sonoma Mountain Event Center in Rohnert Park, CA. Tickets for the show are on sale here.

Edward Sharpe & The Magnetic Zeros and Wavy Gravy last collaborated at Gathering of the Vibes 2014, where Wavy joined the band during their set. Wavy discussed the moment, and many other things, in last year’s interview with Jambands.com.

Wavy Gravy co-founded the SEVA Foundation in 1978 with Ram Dass and a number of others. The group is dedicated to preventing blindness around the world.