Successful recording artists sometimes make a drastic change in their musical direction. Country legend Kenny Rogers started as a pop singer. The switch worked out pretty well for him. That's not always the case. So, what's up with Ed Sheeran? His melodic ballads & boyish charm have made him an international sensation, especially with the ladies. The "Cherub Faced Troubador" recently unveiled a side we've never seen, performing rap & heavy metal songs on "The Tonight Show" with Jimmy Fallon...