You haven't lived until you've seen Yoko Ono cover "Firework" by Katy Perry

In 2010, Yoko Ono performed a screaming song, live art show. That same year, Katy Perry recorded and released the single "Firework", which appeared on her third studio album, Teenage Dream. In 2012, a musical genius working to cure the world of all its problems set the Yoko Ono scream song to the "Firework" instrumentals and a masterpiece was born. You haven't lived until you've heard Yoko Ono's interpretive, unintentional cover of a Katy Perry song. [h/t Jezebel]