A local duo known as 90-Mile Portage will perform folk and Americana tunes during this week’s Saltonstall Summer Concert. Pianist/composer Ben Cosgrove and singer/songwriter Jamie Kallestad will perform at the free concert on Wednesday Aug. 10 from 6:30 to 8 p.m. at the stage near Watertown City Hall (149 Main St.). The pair joined together after being “set … Continue reading Folk Duo Performing That Began Composing Over Email Playing Free Watertown Summer Concert