Yeah, Justin KILLLED it...even did some throwbacks like "Cry Me A River"..I was there and took a quick Vine of the massive sing-a-long:
Here's the entire performance:
He also performed two other new songs for the first time "True Blood" and "Only When I Walk Away"
It was an amazing night check out all the pics from the Justin Timberlake Performance Here
::photo: Brian Friedman for iHeartRadio::