Camden Opera House presents free concert at the Camden Snow Bowl, 20 Barnestown Road. Acclaimed New England art rock band Billy Wylder weaves together American folk, rock and world music. BYO picnics and lawn seating. Rain location: Camden Opera House; decision made 5 p.m. the day before and posted on camdenoperahouse.com/social media. All dogs must be on leash. Sponsored by COH’s Community Arts Fund.