When you're celebrating the 50th episode of CMT Crossroads you have to go big. Pairing a pop phenom with a Grammy-winning country star is the perfect combo. Tune in for an all-new edition as Katy Perry and Kacey Musgraves swap vocals and stories from... (more) their careers. The two take the stage in Los Angeles to perform hits including Perry's "Roar" and Musgraves' "Merry Go 'Round."