I Can See Your Voice Season 1, I Can See Your Voice Season 1

I Can See Your Voice Season 1 VietSub, also known as ICSYV, is a popular international music game show based on the Korean version. The show features a group of "mystery singers" and the task of the guest artists in each round is to eliminate the bad singers without hearing their real voices, with the help of advisors and clues provided by the show. The guest artists will eliminate one or two mystery singers at the end of each round, and the eliminated singers will then perform their real voices on stage. At the end of the show, the chosen mystery singer will be revealed whether they have a good singing voice or not through a duet with one of the guest artists. The guest artist wins if they keep a good singer until the end of the show, and the remaining mystery singer will receive the show's prize.

In other versions, a non-celebrity player participates in the show. The player receives a cash prize for correctly eliminating each bad singer. In the final round, the player can choose to take the prize money if they think the last mystery singer will sing poorly, or continue the show for a chance to win a special prize.

The original version of the show has three rounds with different rules in each season. The first round is "Singer's Visual," where the difference between good and bad singers is judged based on their appearance and costumes. The show provides a video of the player singing a song with the sound turned off, with only a brief 0.3-second sound hint for the guest. Each mystery singer has two identities, and the guest must determine who is the good singer and who is the bad singer based on their appearance.

The second round is "Singer's Lip-sync," where the guest chooses based on the player's lip-sync performance. The good singer will sing along to a pre-recorded track of their own voice, while the bad singer will sing along to a track recorded by someone else to match their tone. Both the player and the lip-sync substitute appear together, lip-syncing the same song, but only one of them is the owner of the pre-recorded track. The two voices will be revealed simultaneously, and one of them belongs to the player. The guest must determine the player's real voice based on their lip-sync performance. The mystery singers are divided into two groups, each performing a lip-sync performance based on the music of a song.

The third round is "Singer's Proof," where each mystery singer has different evidence in various forms. The good singer has their own evidence, while the bad singer has fake evidence. Clues about the singing ability of each mystery singer, such as photos, videos, certificates, etc., are displayed on the screen. Any three chosen individuals (from the advisory board or the host) must use headphones to listen to the mystery singer's voice for 30 seconds. They must then defend the mystery singer and convince the guest to choose them, regardless of whether they sing well or not. The host randomly assigns clues about the mystery singer. The guest must choose a clue for each mystery singer. The guest will use the clue from the host to determine the identity of the mystery singer, and from there, figure out who is the bad singer and who is the good singer.

There have been controversies surrounding the show. In August 2015, CJ ENM accused two Chinese shows, "God of Songs" by SZTV and "X-Singer" by Beijing TV, of plagiarism, as they copied the format and rules of ICSYV. However, "God of Songs" became successful due to its high viewership ratings and even created a trend on social media.

In an interview with CJ ENM, the owner of the format, Diane Min, in June 2020, the company revealed that they had a dispute with "Is That Really Your Voice?," another game show format by Global Agency based in Turkey in 2013, which accused I Can See Your Voice of stealing their idea. However, the show was later adapted into the Chinese and French versions.

I Can See Your Voice has been nominated for the Best Non-Scripted Entertainment Program at the 44th International Emmy Awards, along with Gogglebox, Adotada, and the eventual winner, Allt för Sverige.

Thanks to the popularity of the show in South Korea, I Can See Your Voice has become an international game show and is owned by CJ ENM and other television production companies. Since 2016, the international versions of ICSYV have been broadcast in 18 countries worldwide. "Giọng ải giọng ai," the Vietnamese version of the show, has a similar format to ICSYV but is designed as a "duel format" and is recognized as part of the international version because its unique format has been used for the show's production partners.