As she made many promotional appearances, this performance was the opportunity to break the routine. She was dressed in an unsual way : a beautiful cream wintery looking dress with many jewels.

The performed version was an acoustic rendition of the song. But some fans noticed that her voice sounded quite tired : she couldn't reach the higher notes of Firework when she sang it.

Anyway, this song was already a great success for Katy Perry : it was the third single of the last album topping the charts. She broke two records : she's the first female artist in eleven years to have three consecutive number-one singles from one album, and the first female artist in three years to have three (non-consecutive) number-ones in an album.