Why didn't they think of this sooner? You have Vince Gill, one of the greatest voices of all time, and a guy who will gladly duet with anyone, doing a duet with Kelly Clarkson, one of the greatest voices of all time.

They do a song like "Don't Rush" with that languid r&b groove that sounds great with the windows rolled down in the car--yeah, I know it's December, but I had to try it, and boy, does it work! Flawless harmonies (not unexpected) seal the deal.

It's a great way to kick off the Top 5.