Visual rounds

• Stop, Looks, and Listen

The guest artist is given some time to observe and examine each mystery singer based on their appearance. Afterward, a muted video of each mystery singer reveals only 0.3 seconds of their singing voice as an additional hint.^{[lower-alpha 2]}

• Two or False

Each mystery singer is given two different identities as a good and bad singer, with one of them is a real identity.^{[lower-alpha 3][lower-alpha 4][lower-alpha 5][lower-alpha 6]}

Lip sync rounds

• The Voice is Syncing

Each mystery singer performs a lip sync to a song. Good singers mime to a recording of their own performance, while bad singers mime to a recording by someone else.^{[lower-alpha 2][lower-alpha 3]}

• Sync Zoned

Each mystery singer performs a lip sync from a non-lyrical piece of a song (i.e. humming, screaming, whistling, etc.).^{[lower-alpha 2]}

• Everybody Sync!

Divided into two groups of three (or a pair of) mystery singers, each of them have to perform a lip sync of their own.^{[lower-alpha 4][lower-alpha 5][lower-alpha 6]}

Evidence rounds

• I Like to Prove It! Prove It!

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 have their evidences fabricated.^{[lower-alpha 2]}

• Clues Open

The host has randomly assigned clues about the mystery singer, and then the guest artist must choose a clue for each one.^{[lower-alpha 5][lower-alpha 6]}

For the fourth season:^{[lower-alpha 1]}

• A Whole New Word — The panelist is given a statement with an assigned "keyword" to one of the remaining mystery singers of their choice. Good singers have true statements, while bad singers have their statements fabricated.
• Bed of Boses — Similar to a muted video segment of Stop, Looks, and Listen, a video recording from a studio session by one of the remaining mystery singers of their choice reveals only 0.3 seconds of their singing voice as an additional hint.
• Message Parlor — The guest artist is presented with a video package featuring a "super fan" by one of the remaining mystery singers of their choice.
• Song Ka Pa — The host reveals a playlist of three "mystery songs" that are appropriated to one of the remaining mystery singers of their choice.
• Tabi-tabi Po — The guest artist asks a question to one of the remaining mystery singers of their choice that can answer with nonverbal communication.

For the fifth season:^{[lower-alpha 1]}

• Ano Box? — Inside a semi-concealed container, the panelist must release an evidential piece by one of the remaining mystery singers of their choice, except music-related items (i.e. ballpen, hairbrush, flashlight, etc.).
• Good Night Silip — The guest artist is presented with a preshow rehearsal video by one of the remaining mystery singers of their choice.
• Hula Bira and Shape, Rattle, and Roll — The panelist has to make its own premonition by one of the remaining mystery singers of their choice. Good singers have true statements, while bad singers have their statements fabricated.
• Lights, Camera, Reaction — The guest artist is presented with a video package including witnesses reacting to one of the remaining mystery singers of their choice when they hear on its own performance that would appear on the show.
• Stop, Spluk, and Listen — The guest artist must interrogate to one of the remaining mystery singers of their choice by audio message, but pitch-shifted to obscure their actual vocals.

Rehearsal round

• Play it by Hear

Three random panelists are wearing headphones to listen to a recording of assigned mystery singer that lasts for 15 seconds. Afterward, the panelist defends the mystery singer and convince the guest artist to choose them as the winner.^{[lower-alpha 2][lower-alpha 3][lower-alpha 4]}

Notes