With: Albie Micklich, Andrew Campbell, Martin Schuring, Robe...

Sorores Duo

With: Payman Mansoury, Ara Karapetian, Aram Talalyan, Juliet...

With: John Metz, Barbara Bailey-Metz

With: Stephen Page, Liz Ames

With: Carter Pann, University of Colorado Symphony Orchestra...

With: Canadian Guitar Quartet, Denis Donegani, Louis Tr&eacu...

With: Frank Koonce, Nelson Brenes

With: Stephen Mattingly, Evren Bilgenoglu, Christopher Diaz,...

With: Columbus Gay Men's Chorus, Tim Sarsany, Nathan Ha...

With: Sphere Ensemble, Alejandro Gómez Guillén

Valerie Hartzell