Oh, just one talented Justin channeling another. During his concert in Louisville, KY, on Wednesday, Justin Bieber gave a nod to Justin Timberlake [1] with an awesome acoustic cover of "Cry Me a River." The singer gave the 2002 song his own spin, and the crowd was all about it. Check out the performance above, then watch Bieber and Usher's recent duet [2] from another stop on the Purpose tour.