Billy Gilman Wows Judges with 'Fight Song' on 'The Voice' (Video)
The country music superstars were the guest mentor for the knockout round on the show this season.
“Words cannot express my UNDYING gratitude to @NBCTheVoice and @adamlevine. Onto LIVES BABYYYY!!!” Billy tweeted after his performance aired. Watch below!
The Voice 2016 Knockout – Billy Gilman: “Fight Song”