Sentinel Staff ALLEGAN — Rollin' on the River will return to downtown Allegan in 2021. The free summer concert series will begin at 7 p.m. Friday, June 11, and continue weekly until Friday, Aug. 27. Each concert spans two hours at Riverfront Park. Returning performers at the series, which was canceled amid COVID regulations in 2020, include Asamu Johnson and the Associates of the Blues, Guitar Up and Hollywood Makeout. Bands new to Allegan include The Bootstrap Boys, Modern Adventures and The Hacky Turtles. With the creation of downtown Allegan's new social district, alcoholic beverages may be purchased at participating establishments and enjoyed throughout the designated area — which includes Riverfront Park. Two food services along the riverfront will offer window service.