For this season, there are two different game formats:
Original format
The guest artist(s) eliminate mystery singers at the end of each round, with the last remaining mystery singer ended up in a duet performance by one of the guest artists.
Battle format (eps. 13 and 17)
A variation of the original South Korean rules adapted from Giọng ải giọng ai, when two opposing guest artists eliminate one singer each during the proper game phase, and then remain one singer each to join the final performance. At the end of a game, the following conditions for winning mystery singers chosen by opposing guest artists, depending on the outcome of final performances, if:
One opposing guest artist has revealed as a good singer and the other one has a bad singer, or
Both two opposing guest artists have revealed as good or bad singers.
If the last remaining mystery singer is good, they are featured in a post-show privilege video; if a singer is bad, they win Rp 17,500,000.
Rounds
Visual round
The guest artist is given some time to observe and examine each mystery singer based on their appearance.
Lip sync round
Each mystery singer performs a lip sync to a song; good singers mime to a recording of their own, while bad singers mime to a recording by someone else.
1. Rehearsal round (eps. 1–6)
Three random panelists are wearing headphones to listen to a recording of assigned mystery singer that lasts for 30 seconds. Afterward, the panelist defends the mystery singer and convince the guest artist to choose them as the winner.
2. Evidence round (eps. 7–18)
A proof of each mystery singer's singing ability (i.e. photo, video, certificates, etc.) is shown on the screen. Good singers have own evidences, while bad singers had their evidences fabricated.
Episodes
Guest artists
This section is missing information about the real names of mystery singers. Please expand the section to include this information. Further details may exist on the talk page.(November 2024)