* Eric Owens: American operatic bass-baritone who has performed at the Metropolitan Opera, the Lyric Opera of Chicago, and the San Francisco Opera.
* Willard White: American operatic bass who has performed at the Metropolitan Opera, the Vienna State Opera, and the Royal Opera House.
* Russell Thomas: American operatic baritone who has performed at the Metropolitan Opera, the Lyric Opera of Chicago, and the San Francisco Opera.
* J'Nai Bridges: American operatic mezzo-soprano who has performed at the Metropolitan Opera, the Deutsche Oper Berlin, and the English National Opera.
* Davóne Tines: American operatic bass-baritone who has performed at the Metropolitan Opera, the Carnegie Hall, and the Barbican Centre.
* Ryan Speedo Green: American operatic bass-baritone who has performed at the Metropolitan Opera, the Lyric Opera of Chicago, and the San Francisco Opera.
* Norman Garrett: American operatic bass-baritone who has performed at the Metropolitan Opera, the Vienna State Opera, and the Royal Opera House.
* Carl Tanner: American operatic tenor who has performed at the Metropolitan Opera, the Deutsche Oper Berlin, and the English National Opera.
* Anthony Roth Costanzo: American operatic countertenor who has performed at the Metropolitan Opera, the Carnegie Hall, and the Barbican Centre.