Actors Anna Kendrick and John Krasinski had a truly epic music war on Lip Sync Battle on Spike. It should be no surprise than Anna could lip sync with the best of them as she is famous for her musical talent. But John didn’t do to shabby either.  

But Anna apparently crushed John’s Proud Mary in the end when Jennifer Lopez made a surprise appearance during her Booty dance. 

 

 

Before that John found his inner boy band voice when he performed N Sync’s Bye, Bye, Bye while Anna became a short term member of One Direction.