500th Episode & 10th anniversary Special No competition for this episode 10 special performances based on ten different key words representing this show. Get ready! Everyone's invited to the 10th anniversary of The King of Mask Singer, the mystery music show that's all about true musical battles, free from prejudice. You'll witness an unrivaled vocal powerhouse whose unique sound sends shivers down your spine from the very first note. Don't miss special appearances from past champions, who've prepared an unforgettable stage to mark this incredible 10-year milestone