Rock out with 13 bands on three stages at the 17th Annual Petaluma Music Festival, with proceeds helping keep music in Petaluma schools. Explore the one-of-a-kind wares of local artisans while enjoying food and drinks available for purchase. Tickets range from $65–$179. Ages 13–17: $25 (at the door). Ages 12 & younger: Free with a paying adult. Bring blanket or low-back chair. No pets. Saturday, July 27. 11:30 a.m.–9:30 p.m. Sonoma–Marin Fairgrounds. 100 Fairgrounds Dr., Petaluma. Learn more and purchase tickets at petalumamusicfestival.org.