Marking a decade of supporting music programs in Petaluma schools, the Petaluma Music Festival has achieved status as a major North Bay affair, and this year’s lineup is stacked. Headlining the festival is Chris Robinson Brotherhood, who play off their forthcoming studio album, Barefoot in the Head. The rest of the lineup is a baker’s dozen of beloved Bay Area acts and musicians, and the festival boasts family-friendly activities, all-star silent auction items and fine foods and drinks to enhance the musical offerings on Saturday, Aug. 5, at Sonoma-Marin Fairgrounds, 175 Fairgrounds Drive, Petaluma. 11:30am. $50 and up; kids 12 and under, free. petalumamusicfestival.org.