We're back in Nashville for this weekend's edition of CMT Hot 20 Countdown. Tune in as we test our knowledge of stars and their home states, get a peek at an adorable birthday celebration and reveal a few secret confessions. Also on the show, you won't want to miss bonus videos from Chris Stapleton and Tim McGraw. Then Carrie Underwood earns a rewarding "Smoke Break," Cam reacts to Dierks Bentley, and Thomas Rhett falls into a fan frenzy. See all this and more Saturday and Sunday mornings at 9/8c.