Last night on The Tonight Show with Jimmy Fallon, he kicked the whole Lip-Sync battle thing up another notch! Ariana Grande has an incredible voice, herself, but this is just too great! Jimmy visited Ariana in her dressing room to make some small talk, and things got weird when they ended up mostly communicating through snippets of hit songs by Adele, Rihanna, G-Eazy, Mike Posner, Frank Sinatra, Twenty One Pilots, Justin Bieber, MAGIC!, Sia and so many others.