Then you're going to LIVE for this video!!!
She's gone undercover -- and she OWNS it!
Ch-ch-check out the video for Birthday here (above)!
Dayum, gurl! One word: vocalista.
That's a word, right? Well, it should be now!
How else can we describe what Katy Perry pulled off on Alan Carr: Chatty Man this weekend?
Almost in answer to critics of her playback issues at the NRJ Music Awards, Katy proved just how good her voice really is with a stripped down acoustic version of Unconditionally!