- Turtle Creek Chorale & Tim Seelig
- Gay Men's Chorus of Washington, D.C. & Potomac Fever
- Paul Robeson
- MUSE - Cincinnati's Women's Choir
- Madrigals of SBHS
- Women in Harmony
- Hans Peter Blochwitz, Christopher Bowers-Broadbent, BBC Singers, Avner Itai, Amy Goldstein, Douglas Webster, Buffalo Vocal Ensemble, Brad Lubman, Ramon Ricker Jazz Quintet, Studio ensemble, Ray Edgar, Zamir Chorale & Stanley Sperber