Billboard Awards performers: Cee Lo Green!

Cee Lo Green performs on stage at the 2011 Billboard Music Awards held at the MGM Grand Garden Arena on Sunday (May 22) in Las Vegas, Nev.

The 36-year-old singer performed a medley of his hit songs including “Crazy,” “Bright Lights Big City,” and “Forget You.”

During his performance, Cee Lo’s piano and chair flew through the air doing flips and turns, including a 360 degree turn!