Justin Bieber concussion caught on tape.

FF to 8:50.

We heard Justin perform a stripped down, acoustic version of “Be Alright.” But just as the special moment was over, drama erupted! Apparently, while he was performing “Boyfriend,” Justin hit his head into a glass wall – hard. As Justin was walking down a flight of stairs after his show, he fell and passed out. Scooter says he was unconscious for “4 or 5 minutes” – and the JB special ended on a total cliffhanger….to be continued tomorrow night, June 21, at 8pm EST to NBC!