Presented with a group of seven "mystery singers" identified only by their occupation, a guest artist must attempt to eliminate bad singers from the group without ever hearing them sing, assisted by clues and a celebrity panel over the course of four rounds. At the end of the game, the last remaining mystery singer is revealed as either good or bad by means of a duet between them and one of the guest artists.

The fourth season of the mystery music game show I Can See Your Voice Thailand will air November 4, 2020, on Workpoint TV. I Can See Your Voice Thailand is the Thai adaption of the South Korean program of the same name. The show is hosted by Kan Kantathavorn and Somkiat Chanphram. However, due to the COVID-19 pandemic in Thailand, episodes will continue filming but with no audience admitted with enhanced COVID-19 safety protocols being in effect.

For this season, under the original format, the guest artist can eliminate one or two mystery singers after each round. The game concludes with the last mystery singer standing that depends on outcome of a duet performance with a guest artist.

T-pop artists are presented with six singers whose singing abilities are a mystery. Through a series of four rounds, the guest artist is given new information that may or may not help them eliminate potential bad singers. In the end, the artist will learn if their final pick is in fact a good singer when they perform a duet with them.