Mountaineer Choir: here are two video performances of Ya viene la vieja: http://www.youtube.com/watch?v=Xo75g9m5QiY
http://www.youtube.com/watch?v=x5LWS3KQeyg

Ziemas

Blendz choir-check out this youtube video of a small women's group singing Ziemas!
http://www.youtube.com/watch?v=VPOa-DoH4T4