Chris Brown’s vocal performance at the 2013 Billboard Music Awards has been panned by critics.

The 24-year-old singer took the stage at the MGM Grand Garden Arena in Las Vegas to debut his new single, Fine China.

The Michael Jackson-inspired track saw Chris giving a high-energy performance joined by a team of back-up dancers.

But his vocals left much to be desired as his voice cracked several times during the four-minute set.

“Chris Brown sounds crazy right now on the billboard awards,” one Facebook user wrote while watching the show.

“Chris Brown must have seen Rihanna & Drake in the audience,” another viewer tweeted, making reference to Chris’ love rival.

Others noted the singer sounded “sick” or “stressed out”.

“Chris Brown may be able to dance like MJ, but he sure as hell can't sing like him. That performance was horrible #billboardawards,” another critic wrote.

Some were more understanding.

“I think tonight was just an off night. Happens to everyone,” another viewer tweeted.

Other performers at the annual awards show included Selena Gomez, who sang her new single, Come & Get It with a Bollywood-inspired production.

Macklemore & Ryan Lewis also performed the duo’s hit track Thrift Shop.

Justin Bieber, Bruno Mars Jennifer Lopez, Pitbull, Christina Aguilera, Ed Sheeran, David Guetta and Kacey Musgraves also performed at the event.

The 2013 Billboard Music Awards was hosted by comedian Tracy Morgan.