Reese Witherspoon and Kacey Musgraves join Jimmie Allen, Mickey Guyton, and Orville Peck on a global search for country music’s next big star in a new kind of competition series.

The hourlong concert event, filmed at the historic Ryman Auditorium in Nashville, features multi-platinum recording artist, songwriter and trailblazer Miley Cyrus performing an array of her hits all in the…