Albuquerque Master Chorale, New Mexico
Chant Choral, Quebec City, Canada
Choral Art Society, Maine
Chorale Bel Canto, California
Corban College Chamber Choir, Salem, Oregon
Durango Choral Society, Colorado
Harmonia Choir, Ottawa, Canada
Indianapolis Children's Choir, Indiana
Kenyon College Chamber Singers, Gambier, Ohio
Khorikos, New York City, New York
Koleinu Choir, Columbus, Ohio
Lachan-Toronto Jewish Chamber Choir, Canada
Holy Blossom Temple Choir and Temple Singers, Toronto, Canada
Master Arts Chorale, Victorville, California
Master Chorale of Flagstaff, Arizona
National Philharmonic Chorale, Washington, DC
Prescott Master Chorale, Arizona
Pueblo Choral Society, Colorado
St. Martin's in the Fields Episcopal Chancel Choir, Columbia, South Carolina
That Choir, Toronto, Canada
The Gainesville Civic Chorus, Florida
The Portland Symphonic Choir, Portland, Oregon
The Young Sandlapper Singers, Columbia, South Carolina
Tucson Masterworks Chorale, Arizona
Tucson Symphony Orchestra Chorus, Arizona
West Village Chorale, New York City, New York

Alfred University Singers, Alfred, New York
Auburn University Choirs, Auburn, Alabama
Bach Festival Youth Choir, Orlando, Florida
Beloit College Choir, Beloit, Wisconsin
Central Baptist University, Conway, Arkansas
Central Washington University Choir, Washington
Charleston Southern University, Charleston, South Carolina
Choeur du Plateau, Montreal, Canada
Chorus of Sunderman Conservatory, Gettysburg College, Pennsylvania
Cloud County Community College Choir, Kansas
Corban College Chamber Choir, Salem, Oregon
Edison Community College Choir, Fort Myers, Florida
George Mason University Singers, Washington, DC
Meredith College Choir, North Carolina
Mount Saint Antonio College Choir, Walnut, California
Northern Arizona University Shrine of the Ages Choir, Arizona
Northern Kentucky University Choir, Highland Heights, Kentucky
Northern Virginia Community College, Annandale, Virginia
Oklahoma Baptist University, Shawnee, Oklahoma
Oregon State University Chamber Choir, Corvallis, Oregon
Randolph College Choir, Lynchburg, Virginia
Rocky Mountain College Choir, Billings, Montana
Rowan University Choir, New Jersey
The Limestone College and Community Chorus, South Carolina
The University of North Carolina at Chapel Hill, North Carolina
University Chorus of the University of New Mexico, New Mexico
University of Arizona Concert Choir, Arizona
University of Florida Concert Choir, Florida
University of Puget Sound Adelphian Concert Choir, Tacoma, Washington
University of South Carolina Concert Choir, Columbia, South Carolina
Victor Valley College Singers, Victorville, California
Voices Rising and Vocal Point from Midwest Young Artists Conservatory, Illinois
Webster University Choir, St. Louis, Missouri
West Liberty University Singers, Wheeling, West Virginia
West Liberty College Community Chorus, Wheeling, West Virginia

Morski Zvutsi Varna Representative Municipal Choir, Varna, Bulgaria
Ambitus Choir, Athens, Greece
Anatolia College Alumni Choir, Thessaloniki, Greece
Bath Choral Society, Bath, England
Bogazici Caz Korosu, Istanbul, Turkey
Budapest Youth Choir, Budapest, Hungary
Cosmic Voices Choir, Bulgaria
Emek Hefer Choir, Israel
Hlahol Singing Society, Prague, Czech Republic
La Coral Al-Leluia, Barcelona, Spain
Labyrint Choir, Prague, Czech Republic
London Bulgarian Choir, London, England
Philip Kutev National Folklore Ensemble, Sofia, Bulgaria
Prelude Choir, Budapest, Hungary
The Salzburger Domchor, Salzburg, Austria
The Tel Aviv Chamber Choir, Tel Aviv, Israel
Tivon Choir, Tivon, Israel
University Choir Technik, Bratislava, Slovakia
Varna Children and Youth Opera Choir, Varna, Bulgaria
Youth Choir, Budapest, Hungary
Zenobia Consort Choir, Madrid, Spain
Coro dell'Universita degli Studi di Perugia, Perugia, Italy
Cantoria Hipponesis, Valencia, Spain
Charles University Choir, Prague, Czech Republic
Coro Pueri Cantores del Veneto Italia, Vicenza, Italy

Boston Modern Orchestra Project, Boston, Massachusetts
The Bulgarian National Radio Orchestra, Sofia, Bulgaria
City of Prague Philharmonic Orchestra, Czech Republic
Colorado Springs Youth Symphony, Colorado Springs, Colorado
Dohnanyi Orchestra Budafok, Budapest, Hungary
Florida State University Symphony Orchestra, Florida
MAV Symphony Orchestra, Budapest, Hungary
National Philharmonic, Washington, DC
Orchestra Symphonette, Varna, Bulgaria
Pazardjik Symphony Orchestra, Bulgaria
Plovdiv Philharmonic Orchestra, Plovdiv, Bulgaria
Raanana Symphonette Orchestra, Raanana, Israel
Sofia Philharmonic Orchestra, Sofia, Bulgaria
Stara Zagora Opera Orchestra, Bulgaria
University of South Carolina Symphony Orchestra, Columbia, South Carolina
Varna International Chamber Orchestra, USA
Varna Symphony Orchestra, Varna, Bulgaria
Vidin Philharmonic Orchestra, Vidin, Bulgaria