Singing strength with Note-oreity

I was skeptical when I got the assignment to put together a piece on an a cappella group about their popular video. I've never been one for a cappella and I didn't think a Beyonce cover was going to convert me. And it didn't. But what struck me was how much these women believe in the social good of music. They really want to change the world with their songs. Skip to 5:21 to listen to the segment:Here's a link to their music video.