CMT Hot 20 Countdown has your backstage pass to the hottest acts in country. This week it's Hunter Hayes as we catch up with the CMT on Tour frontman from the historic Fox Theatre in Atlanta. We'll give you a taste of his tour with interviews from Hayes and Ashley Monroe. Plus, don't miss the world premiere of his new video, "Everyone's Got Someone but Me," featuring Jason Mraz. And the No. 1 spot on the countdown is up for grabs. Will Jason Aldean hold on? Tune in to find out.