Friends of Shollenberger present the third annual Shollenberger Shindig from 4 to 8 p.m. June 15 at Tara Firma Farms in Petaluma. The concert features Maria Muldaur and her Red Hot Bluesiana Band. Tickets in advance are $25 general, $100 VIP, and free for kids under 16. Tickets at the door are $30 cash. The proceeds benefit Shollenberger Park and efforts to stop the building of the Dutra Asphalt Plant near it. For details, visit www.saveshollenberger.com.