Sly and the Family Stone. James Brown. Funkadelic. These are some of Diggin’ Dirt’s influences. But the Humboldt County–based band plays plenty of originals, too, and has met with such success, they put out an EP. Hear them churn out their high-energy tunes for free at the last Sundays in the Park concert, on August 15, 6–8 p.m., at Todd Grove Park in Ukiah. See visitukiah.com for details.