Northeast U.S.
Greater Hartford TC
(West Simsbury, CT)
Casco Bay Threshold Singers
(North Yarmouth, ME)
Providence Threshold Singers
(Providence, RI)
Westerly Threshold Singers
(Westerly, RI)
Mid-Atlantic U.S.
Hospicare TC
(Ithaca, NY)
Rockbridge Area Threshold Singers
(Lexington, VA)
Shepherdstown Threshold Singers
(Shepherdstown, WV)
Southeast U.S.
Ultra Sounds Threshold Singers of Boca Raton
(Boca Raton, FL)
Gentle Voices TS
(Leesburg, FL)
Midwest U.S.
Stillwater Hospice Threshold Singers
(Fort Wayne, IN)
TS of Richmond, Indiana
(Richmond, IN)
Greater Lafayette Threshold Singers
(West Lafayette, IN)
Great Lakes U.S.
Crystal Lake Threshold Singers
(Beulah, MI)
Sail On Singers
(Marquette, MI)
Twin Cities Threshold Singers
(St. Paul, MN)
Central U.S.
Pathways Comfort Singers
(Chesterfield, MO)
Rocky Mountains U.S.
Song of the Mountain TS
(Colorado Springs, CO)
Gunnison Valley Threshold Singers
(Crested Butte, CO)
Crestone Threshold Singers
(Crestone, CO)
Grand Valley TS
(Grand Junction, CO)
Southwest U.S.
Southern California
Northern California
Meadow Vista TS
(Meadow Vista, CA)
Sutter Care at Home Threshold Singers
(San Francisco, CA)
Northwest U.S.
Chilkat Valley TC
(Haines, AK)
Heart of Oregon Threshold Singers
(Bend, OR)
Columbia Gorge Threshold Singers
(Hood River, OR)
Haven Threshold Choir
(Bellingham, WA)
TC of the Palouse
(Pullman, WA)
South Seattle Threshold Singers
(Seattle, WA)
HeartSongs TC of Stanwood/Camano
(Stanwood, WA)
Europe
TC of West Wales
(Llangolman, United Kingdom)
(South Brent, United Kingdom)
(Wageningen, Netherlands)
(London ENG, United Kingdom)
Stockholm Bedside Singers
(Stockholm, Sweden)
(Sheffield, United Kingdom)
Canada
Alpine Voices TC
(Canmore, Canada)
Voices of Compassion TC
(Edmonton, Canada)
Bowen Threshold Singers
(Bowen island, Canada)
Pure Joy Threshold Singers
(Campbell River, Canada)
Toronto Threshold Singers
(Toronto, Canada)
Mexico and Central America
Oaxaca Canta
(Oaxaca, Mexico)
Pacific and Southeast Asia
Reflections TS of Christchurch
(Christchurch, New Zealand)
Ballina Threshold Singers
(Ballina, Australia)
Brisbane TC
(Brisbane, Australia)