Being a festival regular in Northern California is a lot like being a golf fan. Just like the Masters opens the season as the first major golf tournament, the Harmony Festival, held last weekend, kicks off a string of long-running annual festivals: the Kate Wolf Memorial Festival (June 24–26), Reggae on the River (July 16–17), the Gaia Festival (Aug. 5–7) and Earthdance (Sept. 23–25). This weekend, it’s the Sierra Nevada World Music Festival (June 17–19), with Toots & the Maytals, Ozomatli, Steel Pulse, Rebelution, Anthony B and others. Friday–Sunday, June 17–19, at Mendocino County Fairgrounds. 14400 Hwy. 128, Boonville. $60–$70 per day. www.snwmf.com.