Enjoy this week's CMT Hot 20 Countdown as we present the Top 10 reasons to be excited about 2015. Spoiler alert: our list is full of upcoming albums, performances and appearances from some of country music's biggest names. Also on the show, Katie Cook goes behind the scenes with Blake Shelton as he prepares to host Saturday Night Live this weekend. You won't want to miss an inside look as he gets ready for his hosting duties. Plus we'll look back at some of his biggest video moments with our Hot 20 Backtrack. See all this and much more Saturday and Sunday mornings at 9/8c.