The 50th episode of "CMT Crossroads" will feature KACEY MUSGRAVES and KATY PERRY.  It won't debut until June 13th but in the meantime, they're busy falling over each other with compliments.  Katy said, quote, "She should be a household name because she offers a unique perspective with her writing style."  Kacey adds, quote, "I love her brain and her heart and I can't wait for our two musical worlds to collide!"  (Billboard)