The Richmond band Letters from Coda will perform at 6:30 p.m. Friday at Flat Iron Crossroads in Gloucester, playing Americana, roots, alt country, ’60s and ’70s pop, and soul music. Doors open at 5 p.m. with the FIX Bar and Positive Pizza. The concert is free. Reserve tickets at flatironcrossroads.com. The band Michigan Rattlers had to cancel its Saturday night performance because of
COVID-19 exposure.