Pop zingers

I've posted videos from Collective Cadenza (or cdza) on three occasions and a video from The Key of Awesome once before.  Both are groups clever with music and a little over the top with their humour.  However, I'm rather delighted to learn that they've teamed up:



I was also rather fiendishly pleased that the Key of Awesome had taken a swipe at Mumford and Sons, although I think M & S are pretty good at taking a joke: