HONK! Festival

21st annual HONK! Festival of Activist Street Bands, October 9-11 across Somerville and Cambridge. Free outdoor street band performances and parades. Friday and Saturday concentrate in Davis Square (Somerville); Sunday's culminating parade marches from Davis Square to Harvard Square (Cambridge) as part of Cambridge's Oktoberfest. Brass bands, second-line ensembles, and activist musicians from around the world.