Diggin Dirt, a California funk and soul band influenced by James Brown and Sly and the Family Stone, heads up a heavily regional roster of Main Stage acts at this year’s state fair. Additional acts will perform at the Park Stage.

Headed by soul man Zach Alder, the seven-piece Diggin Dirt includes two saxophones and double rhythm guitar. The band has headlined at West Coast music festivals, including High Sierra Music Festival and Alaska’s Salmonfest,…