Help keep music in the schools and rock out to bands like the Devil Makes Three, the Mother Hips, Cornmeal and Big Sam’s Funky Nation? It’s definitely a win-win at The Petaluma Music Festival, which features 16 bands on three stages as well as wine and food tasting and artist meet-and-greets. Proceeds to go to Petaluma schools; spend your day jamming on Saturday, August 6, at the Sonoma-Marin Fairgrounds. 175 Fairgrounds Drive, Petaluma. 11am. $25–30. 707.769.9650.