VIDEO: Justin Timberlake Performs New Single 'True Blood' at iHeartRadio Music Festival

Justin Timberlake delighted fans at the iHeartRadio Music Festival in Las Vegas yesterday when he performed a previously unheard track from his new album 'The 20/20 Experience: Part 2 Of 2.'

The former 'NSync member ended the four-hour long show after being introduced on stage by boxing champion Floyd Mayweather. Also in the line-up were superstars Drake, Katy Perry, Miley Cyrus and Bruno Mars on the line-up.

After opening with his massive hit 'Sexy Back' he then debuted the vampire inspired track 'True Blood' which is an upbeat bass filled track. Check out the performance below!