Jimmy Fallon has already proven time and again his skills at impressions, especially of famous singers.  Little did we know, he's not the only one with this skill set.  Last night on the show, Adam Levine was a guest, and faced off head to head with Jimmy on the best musical impressions.  Admittedly, we were blown away.So what'd you think?  Who won the battle?

Which singer can you best do an impression of? (Gotta be better than Fallon's Iggy, right?)