When in doubt, act like Mick Jagger!
That's the advice that music legend Chris Martin is offering to the contestants on The Voice for next week's second round of battle performances. At this point, the competition is fierce on all four teams, and sometimes the little changes can make the biggest differences when singers take the stage.
The Coldplay frontman has been brought on as the official mentor for The Battle: Round 2 and has advised each of the performers on vocal techniques, stage presence and the importance of tailoring songs for their own strengths and personality. Take a look at his impeccable teaching skills in the first look clip above!