Acton Community Chorus, Lisa Cooper, Director

Assabet Valley Mastersingers, Dr. Robert P. Eaton, Artistic Director

Greater Gardner Community Choir, Diane Cushing, Music Director

Master Singers of Worcester, Ed Tyler, Artistic Director

Nashoba Valley Chorale, Anne Watson Born, Music Director

Salisbury Singers, Bradford T. Dumont, Music Director

Shir Joy Chorus, Nan AK Gibbons, Director

Sounds of Stow Chorus & Orchestra, Barbara Jones, Artistic Director

Westford Chorus, Jim Barkovic, Music Director

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Former Member groups:

Atlantic Union College Collegiate Choir

Charles River Chorale

First Non-Parishable Chorus

Harvard Pro Musica

Harvard Unitarian Universalist Church

Heritage Chorale

Joyful Noise

Montachusett Chorale

Quabbin Valley Pro Musica

Westborough Community Chorus

Worcester Children’s Chorus

Worcester Chorus