With a week to go before the first-ever fall premiere of "The Voice
," Adam Levine
dropped by "The Tonight Show
" to talk it up. While he was there, Jay Leno
wanted to know more about Levine's impression of his co-coach Blake Shelton
. He's had more than two seasons to perfect Shelton's southern drawl, and it looks like he's got it down.Levine gave Leno a teaser of the impression during the interview, saying that it just kind of comes ...