| Country | Choir Name | Year |
 Angola |
COCEVAL (COro Central EVAngelico de Luanda) | 2003 |
 Argentina |
Música Libre | 1996 |
 Australia |
Adelaide Chamber Singers | 2006 |
| Australia |
Woden Valley Youth Choir | 2006 |
 Austria |
Chor Jung Wien | 1993 |
| Austria |
Friedrich Lessky Chor Wien | 2003 |
| Austria |
Kammerchor des Musikgymnasiums Wien | 1987, 1993, 2000 |
| Austria |
Tiroler Kammerchor Wörgl | 1987, 1996 |
| Austria |
Wiener Männergesangverein | 2000 |
 Belgium |
The Children's Choir of Wallonia | 1996 |
 Botswana |
The Gaborone Choral Societyr | 1993, 2000 |
| Botswana |
K.T.M. Choir | 1993 |
 Bulgaria |
Dobri Hristov Women's Choir of Varna | 2003 |
 Canada |
Da Camera Singers, Edmonton | 2003 |
| Canada |
Winnipeg Mennonite Children's Choir | 1993 |
| Canada |
Ukrainian Male Chorus of Edmonton | 1996 |
 China |
Jiangmen Children's Choir | 2000 |
 Colombia |
Coral Comfenalco Santander, Bucaramanga | 2003 |
 Cuba |
Coro Exaudi | 2000 |
 Czech Republic |
Karlovy Vary Girls' Choir | 1993 |
| Czech Republic |
Ústi Children's Choir | 2006 |
| Czech Republic |
Zvonecek-Praha Concert Choir | 2009 |
 Denmark |
Copenhagen Motet Choir | 1990 |
| Denmark |
The Girls' Choir of St. Jørgen's Church | 2000 |
 Estonia |
EELK Misjonikoor | 2006 |
| Estonia |
Kalevi Kammerkoor | 2009 |
| Estonia |
Tallinn Chamber Choir | 1990 |
 Finland |
Joensuu University Choir | 2003 |
 France |
The Children's Choir of Didion-Raugraff School, Nancy | 1987 |
 Georgia |
The Chanters Group of the Church of St. Panteleimon the Healer | 2009 |
 Germany |
Bruckner Chor of Neckargemund | 1993 |
| Germany |
KammerChor Saarbrücken | 2009 |
 Hong Kong |
The Hong Kong Children's Choir | 1996 |
 India |
Navrachana School Choir | 2006 |
 Italy |
Coro Idica | 1990 |
| Italy |
Coro Alpi Cozie | 1987 |
| Italy |
Coro La Valle | 1987 |
| Italy |
Musica Laus Choral Society of Turin | 1987 |
 Japan |
Chor Sapporo | 1990 |
| Japan |
Kumamoto Madre Cor | 1990 |
 Latvia |
Jazeps Medins Music School Boys' Choir, Riga | 2003 |
| Latvia |
Riga Chamber Choir "Ave Sol" | 1987 |
 Lithuania |
Virgo Choir of Vilnius University | 1990 |
 Malaysia |
Operafast Children's Choir, Selangor | 2003 |
 Mexico |
Coral Divertimento Mexico | 2009 |
 Netherlands |
Rotterdams Mannenkoor "Variante" | 1993 |
 New Zealand |
The Ambassador Choir of Palmerston North | 1996 |
 Peru |
Coro Femenino de la Pontificia Universidad Católica del Perú, Lima | 2003 |
 Poland |
Wroclaw Technical University Chorus | 1987, 1996 |
 Puerto Rico |
Coral Polifónica de Ponce | 1993 |
 Scotland |
The Glasgow Phoenix Choir | 1990 |
 Singapore |
The Singapore Philharmonic Chorus | 1996 |
 Slovakia |
Cantica Nova, Trnava | 2003 |
 Slovenia |
The Mariborski Oktet | 2006 |
 South Korea |
Ansan City Choir | 2006 |
| South Korea |
Ewha Chamber Choir, Seoul | 2003 |
| South Korea |
Gyungju Choral | 2009 |
| South Korea |
InCantores Male Choir | 1993 |
| South Korea |
The Seoul Ladies' Singers | 1996 |
 Spain |
Coro Hodeiertz of Tolosa | 1993 |
| Spain |
Coro Universitario Sant Yago | 2000 |
| Spain |
Giovanni Bardi Chamber Choir, Canary Islands | 2003 |
 Sweden |
Koritsia | 2009 |
 Taiwan |
Tainan Chamber Choir | 2009 |
| Taiwan |
Taipei County Teachers' Choir | 1996 |
| Taiwan |
Taipei Philharmonic Chamber Choir | 2006 |
| Taiwan |
The Taipei Philharmonic Youth and Children's Choir | 2003 |
 Thailand |
Wattana and B.C.C. Combined Choir of Bangkok | 1996 |
 Uruguay |
Coro de Profundis | 1990 |
 United States |
Arizona: The Orpheus Male Chorus of Phoenix | 1993 |
| United States |
California: Ragazzi Boys Chorus | 2006 |
| United States |
California: UC Alumni Chorus - Berkeley | 2009 |
| United States |
Colorado: Rocky Mountain Children's Choir "Fourteeners" | 2009 |
| United States |
Georgia: The Decatur Civic Chorus | 2000 |
| United States |
Kansas: Lawrence Boys Chorus | 2006 |
| United States |
Michigan: Jefferson Avenue Presbyterian Church Chancel Choir | 2009 |
| United States |
Minnesota: The Apollo Club of Minneapolis | 1987 |
| United States |
Montana: Great Falls Symphonic Choir | 1990 |
| United States |
Montana: Helena Chamber and Symphony Chorales | 1987 |
| United States |
Montana: Missoula Mendelssohn Club | 1987, 1990, 1993, 1996, 2000, 2003 |
| United States |
Montana: Missoula Sacred Harp | 1993 |
| United States |
Montana: Missoula Symphony Chorale | 1987, 1990, 1993, 1996, 2000, 2003 |
| United States |
Montana: Missoula Youth Choir | 1987, 1990, 1993, 1996, 2000, 2003, 2006, 2009 |
| United States |
Montana: Montana Alumni Choir 2000 | 2000 |
| United States |
Montana: Montana Youth Choir | 1993 |
| United States |
Montana: The Fort Peck Oyate Singers | 2000 |
| United States |
Montana: The Montana Chorale | 1990, 1996 |
| United States |
North Carolina: Greensboro Youth Chorus | 2003 |
| United States |
North Dakota: Yellowface Singers | 2006 |
| United States |
Oregon: Oregon Repertory Singers | 2003 |
| United States |
Oregon: The Vintage Singers | 1990, 2000 |
| United States |
Oregon: Willamette Master Chorus | 1993 |
| United States |
South Dakota: Singing Legionnaires | 1987 |
| United States |
Washington: Northwest Girlchoir "Vivace" | 2003 |
| United States |
Washington: Tacoma Youth Chorus Chamber Choir | 2000 |
| United States |
Washington: Tacoma Youth Chorus Chorale | 2006 |
| United States |
Washington: The Apollo Club of Wenatchee | 1996 |
| United States |
Wyoming: The Central Wyoming A Cappella Chamber Singers | 1993 |
 Wales |
Abertillery Orpheus Male Choir | 2006 |
International Choral Festival - International Choral Festival Missoula Montana USA
Previous Participating Choirs
