Hear Rascal Flatts Awesome Version of “Happy” [VIDEO]

Pharrell Williams from The Voice had a monster hit with "Happy". "Happy" is one of those songs that everyone knows. I don't care what kind of music you listen to you have heard "Happy". I have heard many covers of this song but this little piece from Rascal Flatts may be the coolest yet. Check out the killer harmonies from Gary and the boys as they do their version.