The King of Mask Singer [1] (Korean: 미스터리 음악쇼 복면가왕; RR: Miseuteori Eumaksyo Bongmyeon-gawang; lit.

Mystery Music Show: Masked Singer's King) is a South Korean singing competition program presented by Kim Sung-joo,[2] with introductions by voice actor Lee Won-joon [ko].

They are given elaborate masks which are made by designer Hwang Jae-geun [ko][5] and gloves to wear in order to conceal their identity, thus removing factors such as popularity, career and age that could lead to prejudiced voting.

[7] Ha Hyun-woo of Guckkasten ("Music Captain of Our Local") and Yunmin of TOUCHED [ko] ("The Joys And Sorrows Also Count As Rock") have nine consecutive wins, which is the highest number of wins achieved by any contestant (and highest number of both males and females)[8][9] Due to great interest and demand, the show released a special album consisting of a selection of studio recordings by the competitors.

Only apply for three main rounds of each generation, ie except the final battle with the current Mask King.