final night of Knockout Rounds was so good, it had John Legend second-guessing himself!Blake Shelton pitted the 19-year-old singer against Connor Christian for his team's final showdown ahead of the season 20 live shows, but Cam proved that he was in a world of his own when he took the stage for his performance of «Feeling Good,» singing the version of the song made famous by the legendary Nina Simone.«My main thing for this round was to find something that I could lose myself in,» Cam said