 The GVO has also enjoyed the musical insights brought by several guest conductors including David Amram, Michael Gilbert, Alejandro Guzman, David Leibowitz, Mark Mandorano, Gregory Ortega, Ki-Sun Sung, Peter Szep, and Sybille Werner.The GVO has performed a wide repertoire ranging from Bach to Beethoven to Bruckner and beyond.Over its history, the orchestra has commissioned new music, provided composer contests, and performed world premieres such as the 1990 premiere of Bruce Wolosoff's "When Fire Flows like Water".