Justin Bieber -- Unplugged for Image Rehab (TMZ TV)
Justin Bieber Unplugged for Image Rehab [TMZ TV]
![](https://cdn.statically.io/img/imagez.tmz.com/image/3c/16by9/2015/01/22/3c5d8b48fe6b5d94b01a33c88ced13f7_md.jpg)
Justin Bieber did an impromptu acoustic concert in L.A. ... and sounded great -- further proving he's making big changes in his life and his career. He didn't even pee in a bucket during the gig!
Hard to believe, but it's looking like bad boy Biebs is gone for good.