It was really good! Not my fave performance of the song( X factor Italy,Australia,Ema's>>>) but still great.She looked like an angel! Mess @ some of the contestants messing up the lyrics!

The beginning was great, I love the way she looked.

Later it was really bad, especially with those un-talanted contestants.

Final 4, seriously?

She did great.

She looked stunning wow
This was my favourite UC performance

It would've been perfect without the contestants. They seem uninterested. I like her outfit and the dancers'.

Wow, setting the bar up

Can u please explain me how?

What was so special about this performance?

Madonna is on ur avi. And she is the best female performer of all time.

So help me see the light,please!

It was decent

Amazing!

Stunning.

She looked fantastic It's true that the contestants weren't very good, but nonetheless I liked her performance.

All this video shows to me is how strained Germany's talent pool must be getting after they've exported all their amazing acts like Tokio Hotel and Cascada.

Woo lawd @ that top 4.

so they are good background singers... ANd you wanna tell me this 4 people are really the final four... good that I d NOT watch this even when I am living in Germany.. THis embarrissing... Nice from Katy that she really did that. I wouldn't.....

? I don't understand

this was pretty awesome!!