SoVoSo – http://www.sovoso.com/index.html
Slammin All-Body Band – http://crosspulse.com/html/slammin.html
Linda Tillery & the Cultural Heritage Choir – http://www.culturalheritagechoir.com/
Chelle! and Friends – http://www.chellemusic.com/
Zadell – http://www.zadellmusic.com/
Rankin Scroo – http://profile.myspace.com/index.cfm?fuseaction=user.viewprofile&friendID=52599701
The Freight Singers – https://www.thefreight.org/freight-singers/
BryanDyer.com 
I really enjoyed the Circle Sing last night and your excellent leadership.
Very cool your singing in a way to bring out the overtones of your voice.
I do chanting circles myself but now am enjoying the exploration of what others are doing. I have a classical Indian music background. Please put me on your email list for concerts. Blessings, Sangita