(Video) Michael Jackson performs "Slave To The Rhythm" at the 2014 Billboard Awards

(Video) Tamar Braxton sings "Diamonds" by Rihanna

(Video) Alexandria Burke interviews on "Loose Women" and performs 2 acoustic songs

Interview + performance of 'Let It Go'

Acoustic cover of 'Jealousy'



Acoustic cover of 'Jar Of Hearts'

(Video) Beyoncé performs 'End Of Time' at "Revel"

(Video) Nelly Furtado performs 'Big Hoops' on “The Tonight Show with Jay Leno”

(Video) Jennifer Lopez performs 'Goin' In' on the "American Idol" season finale

Jennifer Lopez ~ live on American Idol 2012... by HumanSlinky

(Video) Rihanna performs 'Where Have You Been' on the "American Idol" season finale

Rihanna ~ live on American Idol 2012, Winner... by HumanSlinky

(Video) Justin Bieber interviews and performs 'Boyfriend' on "The Ellen DeGeneres Show"

(Video) Whitney Houston Tribute at the "2012 Billboard Music Awards"

(Video) Nelly Furtado performs 'Big Hoops' on the U.K. "Alan Carr: Chatty Man" show

(Video) Drake, Rick Ross, French Montana and Meek Mill perform 'Stay Schemin'

Usher was trippin



R&B heart throb Usher was seen at a concert in Berlin, Germany in early Janurary. He obviously was sick or something as can be seen in his performance below.