If this isn't great entertainment, I don't know what is. Watch how they dance in and out around the one microphone. I believe Karl learned this from how a lot of acts did it back in the earlier years of country & bluegrass music. His music is like a journey back to the 50's. I love it.
 

This video was filmed in high definition and rendered to 640 X 480

Again, let me remind you that I know for sure if you are viewing this in IE, if you left click on the video window a couple times you can view the video in full screen size.