Yoko Ono Covers Katy Perry’s ‘Firework’, We Think [VIDEO]Yoko Ono Covers Katy Perry’s ‘Firework’, We Think [VIDEO]When you think of Katy Perry's 'Firework', you think of inspiration, and positive words. When you think of Yoko Ono doing that song, well, we aren't sure.BJ RagoneBJ Ragone