This is the concert program of the Boston University Symphony Orchestra performance on Thursday, March 7, 2013 at 8:00 p.m., at the Tsai Performance Center, 685 Commonwealth Avenue, Boston, Massachusetts. Works performed were Density 21.5 by Edgard Varèse, Shadow of Sound by Salvatore Sciarrino, and La mer by Claude Debussy. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund