Mystery Music Show: King of Masked Singer (Hangul: 미스터리 음악쇼: 복면가왕) is a 2015 South Korean television program hosted by Kim Sung-joo. It airs on MBC on Sunday at 16:50 beginning April 5, 2015.
Competitors are given elaborate masks to wear in order to conceal their identity, thus removing factors such as popularity, career and age that could lead to prejudiced voting. In the first round, a pair of competitors sing the same song, while in the second and third rounds they each sing a solo song. After the First Generation, the winner of the Third Round goes on to challenge the Mask King, and is either eliminated or replaces the previous Mask King through live voting.
The winners of each pair are selected by the audience and panel of judges through instant live votes. The names of contestants are not revealed unless they have been eliminated. The next generation is continued with a new set of masked singers who will all go through three rounds of elimination, with one finalist challenging the winner of the previous generation's Mask King.