In reply to Meteorite.

You know, I have come to noticed this. When she does a cover of a song she really is amazing, as even seen here with the Britney Spears, Cher, Shakira impersonation; and even on The Voice when she is coaching her team and singing the songs to them, she is truly mind blowing. However, for some strange reason when covers her own material she's hit and miss and I Love Christina and can admit that. But yeah man when she does a cover of a song she is a beast. If you do you're homework you'll notice this too.