Keystone’s Bluegrass and Beer festival, a longstanding tradition now in its 29th year, will return to River Run village on Aug. 1-2, benefiting the Summit High School girl’s rugby team. Over the next two days, free bluegrass concerts will feature 14 different performers, including Mighty Holler, Old Dangerfield, The Brothers Comatose, Jake Leg, Rebecca Frazier and Silas Herman & the Tone Unit. Meanwhile, beers from more than 25 breweries — both from Summit County and across the country — will be available for sampling. Outside of drinks and music, the festival also features food, shopping, a kids zone and awards for the best food and beer. Festival entry and the concerts are free, but a pass is required to participate in the beer samplings.