Cygnus & Cutting Edge Concerts (Hosted by Victoria Bond) present new works by David Del Tredici, Anna Weesner, Morris Rosenzweig, and Richard Festinger--April 30, 8pm at Symphony Space ///// featuring sopranos Tony Arnold, and baritone Michael Kelly, contrabass player Nathaniel Chase, virtuoso trombonist Felix Del Tredici and Vox n Plux -- soprano Elizabeth Farnum, with the 2 Cygnus guitarists