R&B wunderkind Jason Derulo has fractured his neck while rehearsing moves for his tour.

Derulo is preparing for a tour on the back of his 2011 album Future History and he just tweeted that while working on the choreography, he fractured his neck.

An hour ago he tweeted via Facebook “I fractured my neck doing tumbling & acrobatics 4 tour! Always tryin 2 push boundaries 4 YOU! Like my new chain? ;) ”

He seems in decent enough spirits, since his new chain is a pretty scary looking neckbrace and he took the time to Instagram or Hipstamatic his photo.

There’s no other word on the severity of the injury, or whether it will effect his UK and European tour running from February 12 to March 26, or his forthcoming Australian tour in April.