This three-week festival— interpreting Shostakovich the man, Shostakovich the composer, and specific Shostakovich compositions—comprises three concerts at the National Gallery of Art, Dumbarton Concerts, and Georgetown University, as well as four film events at the National Gallery. The participants include Solomon Volkov; author of Shostakovich’s memoirs, the eminent British filmmaker Tony Palmer (“No one makes better films about musicians”—The London Times);  film historian Peter Rollberg; and music historian Roy Guenther.