Whether or not you feel like you've had enough of pint-sized rapper/YouTube sensation Matty B, he sure seems to have staying power!

Check out the 7-year-old rapper's interpretation of Katy Perry's "Firework" - the pop diva even gave him her approval! Katy tweeted, "so.. I met this amazing 7 year old kid, MATTY B & he told me he was gonna do a #FIREWORK remix & he did! It's amazing! http://bit.ly/fW4Yu8." She later tweeted, "Shout out to

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