Watch this interview with Crissy Collins:
https://www.youtube.com/watch?v=1S5PBn4AVog

Crystal "Crissy Collins" is a background vocalist for Beyonce, also known as The Mamas. She has also appeared in several Tyler Perry productions such as Madea's Big Happy Family as the character Tammy.

Also check out this performance by Crissy Collins featuring violinist, Ken Ford:
https://www.youtube.com/watch?v=QivLyUQJoIg