CMT Hot 20 Countdown heads to the Johnny Cash Museum in Nashville this weekend to celebrate the life and music of the Man in Black. Tune in as we tour the museum, and take a closer look at the many artists influenced by the icon. Also on the show, see the world premiere of Don Henley and Dolly Parton's new video, "When I Stop Dreaming." Then, get the scoop on this year's CMA Awards nominations, catch a glimpse behind Carrie Underwood's new music video, "Smoke Break," and skate through a day in the life of Dustin Lynch. Enjoy all this and more Saturday and Sunday mornings at 9/8c.