Meghan Trainor and James Corden Sang a Duet and (Surprise!) It Wasn't in a Car

James Corden took a break from singing in cars with celebrities (and the First Lady) to croon with Meghan Trainor live on stage. During Trainor's Friday night show at L.A.'s Greek Theater, the pop star gave surprise guest Corden a microphone and let him cut loose with the part John ... More