{"value"=>"Includes letters from Laurie Spiegel, the Society for Vocal Chamber Music, Nikolai Sokoloff, Harvey Sollberger, Johannes Felix Somary, Richard Willis (under the auspices of the Southeastern Composers' League), Claudio Spies, M. Lewis Spratlan, Jr., Philip Springer, Edward Staley, Dorrance Stalvey, Leonard Ratner (under the auspices of Stanford University), Robert Starer, and others."}