Bang on a Can Summer Music Festival is MASS MoCA’s longest running musical event: a three-week concatenation of performances, workshops, and seminars focused on adventurous new music. The Festival’s public programs include 40+ performances during regular museum hours—taking over gallery spaces, courtyards, and virtually any other space the musicians can exploit. The Festival also includes several fully staged Hunter Center theater concerts, including a signature Bang on a Can Marathon: 6+ hours of mesmerizing music that ricochets within the triangular zone marked by jazz, classical music, and rock.