The crooning starts around two minutes in:

That's Dirk Nowitzki -- who, as you may remember, once said he likes to sing David Hasselhoff's "Looking for Freedom" to calm himself down at the free throw line -- singing the song after a quick guitar chord refresher from TV host Stefan Raab. He even adds a little Extreme at the end there.

If you're impatient, here's the moment the beat drops. UND:

I have no idea what else is said in this video, but I bet it's charming.

(via The Friendly Bounce)