With: Oakland East Bay Gay Men's Chorus, Stephanie Lynne Smi...

With: One Voice Chorus, Sotto Voce, Allen University Concert...

With: One Voice Chorus, Gerald Gurss, Sotto voce, Dawn Broom...

With: One Voice Chorus, Gerald Gurss, Adam Ward, Dawn Broom,...

With: One Voice Chorus, Nashville in Harmony, Don Schlosser,...

With: One Voice Chorus, Sotto Voce, Gerald Gurss, Dawn Broom...

With: Andreas Oeste, Anthony Costa, Daryl Durran, Katelyn Es...

With: David Oistrach, Orchestra of the Swiss Italian Radio, ...

With: Fred Ormand, Julia Broxholm, Martin Katz

With: Gloria Orozco Dorado, Nico Barberan, Ana Maria Iordach...

With: Atanas Ourkouzounov, Mie Ogura

Atanas Ourkouzounov