[13]  On December 2, 2010, Tsui gave an interview on  The Ellen DeGeneres Show   http://www.youtube.com/v/Jort8tqvoCo?fs=1&hl=en_US and performed a mashup of  Katy Perry ‘s “ Firework ” and  Bruno Mars ‘ “ Grenade ” with Schneider. [14] [15] Discography The Covers To see these music videos click here No. Title Writer(s)