Entertainment Tonight's Nashville Week! We're backstage at the "Country Music Television Awards" with all the big stars, red-hot couples and Carrie Underwood's record breaking night. Plus, Trisha Yearwood stops by our "Music City U.S.A" set to help us host the show. Then, breaking couples news. The star couple on the verge of calling it quits. Plus, a pop star living it up with her billionaire boyfriend. Entertainment Begins and ends with ET.