Assertion: symphonic choir | /r/CapableOf | work with professional orchestras
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text: The Symphonic Choir, under the direction of Westminster's Director of Choral Activities, has sung at individual performances of large orchestral/choral works with professional orchestras conducted by Claudio Abbado, Daniel Barenboim, Leonard Bernstein, Herbert von Karajan, Eugene Ormandy, William Steinberg, Leopold Stokowski, Charles Dutoit, Neville Marriner, Nicholas McGegan, Arturo Toscanini, and Bruno Walter, and such contemporary figures as Pierre Boulez, Mariss Jansons, Erich Leinsdorf, James Levine, Zdeněk Mácal, Kurt Masur, Lorin Maazel, Michael Tilson Thomas, Riccardo Muti, Claudio Abbado, Seiji Ozawa, Wolfgang Sawallisch, Robert Shaw, Zubin Mehta, Albert Wolff, and Rafael Frühbeck de Burgos.