'The Voice' coach will.i.am told to cool it

'The Voice' coach will.i.am has been told to calm down after a furious bust up with Jessie J.

The mentor was accused by his own entourage of being too aggressive towards the 'Price Tag' singer after they both tried to convince contestant Joelle, 21, - who impressed with a stunning rendition of Adele's 'Rolling in the Deep' - to join their rival teams on the BBC One show.