Mystery Music Show: King of Mask Singer

Where to Watch Mystery Music Show: King of Mask Singer Season 1 Episode 521 Online Free - Episode 521

Stream Mystery Music Show: King of Mask Singer Season 1 Episode 521 online free on MyFlixer. This episode, "Episode 521", is available through several HD servers, works on phones, tablets and smart TVs, and never asks for an account or a credit card.

Mystery Music Show: King of Mask Singer is a reality series that first aired on April 5, 2015 on MBC. The series stars Kim Sung-joo and Kim Gu-ra. So far it spans 1 season and 525 episodes and its current status is "Returning Series". Season 1 has 525 episodes, and episode 521 originally aired on December 7, 2025 with a runtime of about 1h 29m. The show holds a 5.6/10 rating on TMDB.

About the series: 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 identities of the singers are not revealed unless they have been eliminated.

All episodes of Mystery Music Show: King of Mask Singer are organised by season on MyFlixer, so you can binge from the pilot to the latest episode in HD. Scroll down for the full Season 1 list and for similar shows such as I-LAND, Wipeout and Glow Up: Britain's Next Make-Up Star.

Mystery Music Show: King of Mask Singer Season 1 FAQ

Is Mystery Music Show: King of Mask Singer Season 1 Episode 521 free to watch on MyFlixer?

Yes. Every episode of Mystery Music Show: King of Mask Singer, including Season 1 Episode 521, streams free in HD on MyFlixer (MyFlixerz) with no registration.

How many episodes are in Season 1 of Mystery Music Show: King of Mask Singer?

Season 1 of Mystery Music Show: King of Mask Singer has 525 episodes, and all of them are listed on this page with direct watch links.

When did Mystery Music Show: King of Mask Singer Season 1 Episode 521 air?

Episode 521 of Season 1 ("Episode 521") first aired on December 7, 2025.

Can I watch Mystery Music Show: King of Mask Singer on my phone or TV?

Yes. The MyFlixer player works in any modern browser on Android, iPhone, iPad, laptops, desktops and smart TVs, with no app to install.