Justin Timberlake made a surprise appearance on stage at a charity concert in Las Vegas on Saturday (October 23).

The singer-turned-actor performed a trio of hits on acoustic guitar for fans at the benefit gig for Shriners Hospitals For Children.

Timberlake, who hosted the concert at Planet Hollywood, opened his medely with 'Cry Me A River', before introducing lyrics from Bill Withers' 'Ain't No Sunshine'.

The singer also played down recent reports that he was turning his back on singing, telling the crowd that when he comes back, “I'm gonna come harder.”

Timberlake ended his performance with a cover of Drake's hit 'Over'.

The benefit gig also featured performances from Christina Aguilera, Diddy-Dirty Money, FreeSol, Lady Antebellum and T-Pain.

Justin Timberlake performs in Las Vegas:

(by Jason Gregory)