On September 12, 2010, thirty-one chamber music ensembles, from baroque and classical to contemporary and jazz, performed on three different stages for a marathon six-hour run of live music as part of Chamber Music Day presented by the SF Friends of Chamber Music in collaboration with the SF Conservatory of Music. Photographs of the Trumpet Super Group, Adam Shulman Trio, Lisa Mezzacappa and Nightshade, and the Alexander String Quartet are featured here.