I enjoy each of their acapella songs that I could listen to them all day. They sing nice songs, medleys, and any kind of song that they know. Try watching and listening to one of their videos called "Evolution of Music". The link is...
I was surprised when my sister told me they won in a contest named "The Sing-off" years ago. They are five in a group and they managed to beat groups with at least 8-13 members each. I was really speechless when I watched most of their performances.
If you like them, why don't you subscribe to them on their YouTube page: http://www.youtube.com/user/PTXofficial , like them on facebook https://www.facebook.com/Pentatonix , and if you like to know more about them, you could visit their page at http://www.ptxofficial.com/
Oh yeah... here is a picture of them so you could see how they look like. (Although they changed looks now)
That's it for today, this is M.I.G. signing off to another great day :)Feel free to leave comments and suggestions of things you want me to talk about below...
Thank you :D