Justin Bieber Performs 'Sorry' on 'The Voice' Finale (Video)

Justin Bieber sings his heart out while starting off his performance on the finale of The Voice on Tuesday (December 15) in Los Angeles.

The 21-year-old singer started the performance out by playing the piano and doing an acoustic version. He then got up and started dancing while singing the version you hear on the radio all the time!

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Justin was the last star to perform on the episode before the winner was revealed.