1. An Nguyên (Episode 5)
Fans of 'The Masked Singer' are no strangers to disastrous duet performances. However, the 'off-key' act from contestant An Nguyên in Episode 5 had the entire studio laughing uncontrollably. The contestant cleverly tricked everyone into reaching the final round, but his singing completely disappointed Ngô Kiến Huy. While the audience could only laugh at his off-pitch vocals, Ngô Kiến Huy was left to regret his poor choice on stage. Despite this, the performance provided plenty of laughs and relaxation for the viewers, and for Ngô Kiến Huy, it was probably the most unforgettable duet he’s ever had to endure.

2. Nguyễn Lê Minh Dương (Episode 1)
The performance of the song 'Em của ngày hôm qua' in a completely offbeat version was absolutely hilarious. This contestant, with his voice capable of destroying everything, managed to send the entire audience into fits of laughter with his tone-deaf singing and choreography that didn't even require backup dancers. If Sơn Tùng ever heard this cover, he’d likely burst into tears from laughing at Minh Dương's out-of-tune version. Even the most dedicated fans, the Sky, would probably struggle to recognize this as their idol's hit. As Minh Dương began singing, both the audience and the guest judges could only laugh until his enthusiastic performance finally came to an end.

3. Lê Minh Hùng (Episode 3)
Without a doubt, Sơn Tùng would be screaming in disbelief watching this performance. The 'awkward' style combined with a 'painful' voice created a hilarious moment for the audience. Many contestants chose Sơn Tùng's songs, but unfortunately, this particular voice was far from pleasant. Minh Hùng shared that he's a big fan of comedy, and his performance truly lived up to that claim. The humor was in the very tone of his off-key singing and his delivery, which left the audience in stitches. Perhaps this contestant is more suited for comedy than singing.

4. Trương Tấn Cường (Episode 3)
Both teams were left in stitches by this unique voice. His performance style—sad face but upbeat singing and actions—had everyone laughing uncontrollably. With his serious expression, many audience members expected Tấn Cường to perform a heartfelt bolero or a soft ballad. Instead, his performance sparked a major debate due to its comedic value. There's no denying the entertainment value of this act. Tấn Cường’s appearance was one of the most amusing parts of the show.

5. Lý Quyên Thành (Episode 2)
Lý Quyên Thành is the next contestant to leave the audience in fits of laughter. This fashion designer’s ‘incredible’ singing voice had Trấn Thành literally rolling on the floor in laughter. The moment Lý Quyên Thành began to sing, Trấn Thành couldn’t contain himself and collapsed onto the stage, overwhelmed by the absurdity of it all. Yet, there’s no denying the entertainment value he brought. His charming face, paired with his 'disastrous' singing and great performance skills, made this one of the funniest moments of the show.

6. Phạm Bùi Trung Hậu - Comedian Thu Trang (Episode 6)
The duet performance of this off-key couple provided the audience with a relaxing and laughter-filled entertainment. Thu Trang’s off-pitch voice, completely out of tune, was perfectly paired with her partner’s equally flawed vocals, creating a comedy sketch on stage. Their acting, as if they were music idols despite their 'terrible' singing, made the performance even more amusing. As a professional comedian, Thu Trang had the crowd laughing non-stop, drawing loud applause from the audience.

7. Lê Thị Hảo - Cao Thái Sơn (Episode 8)
Contrary to her angelic appearance, this contestant possessed a "demonic" voice that caused Cao Thái Sơn to "crumble". His choice turned out to be a mistake, as although she had a beautiful and captivating stage presence, her singing was the complete opposite. Lê Thị Hảo managed to fool all the judges and made it to the final round. Her duet with Cao Thái Sơn left him helpless, unable to salvage the performance. The audience burst into laughter at the stark contrast between her charming appearance and her tone-deaf singing. Cao Thái Sơn’s poor judgment cost him the victory, but it certainly brought joy to the audience. He jokingly said, "You just need to be beautiful, let me handle the rest."

8. Lương Thị Tuyết Minh - Hương Tràm (Episode 8)
Hương Tràm couldn’t stop laughing at this contestant's "unbearable" singing. Hương Tràm was literally unable to hold back her laughter as the contestant’s out-of-tune voice hit all the wrong notes. Despite her charming appearance and carefree stage presence, the performance had the audience and guests in stitches. At some points, Hương Tràm couldn’t even sing along due to the contestant’s off-key singing. Although this choice didn’t result in the most polished performance, it undoubtedly became the funniest moment of the show.

9. Nguyễn Hải Ninh (Episode 14)

10. Lê Hương - Hòa Minzy (Season 3 - Episode 1)
Fans of Hòa Minzy's hit song 'Rời bỏ' were probably not expecting such a hilarious cover performance. On the stage of 'Giọng ải giọng ai' Season 3, from the very first episode, the audience and celebrity guests were treated to a laugh-out-loud moment. Lê Hương, a beautiful and fashionable girl, stunned everyone with her singing skills—or rather, lack thereof. While the guest singer delivered the song sweetly and effortlessly, Lê Hương’s performance was completely off-key. Her attempts at high notes and fancy trills were so offbeat they had the audience in stitches. The real comedy came near the end when Hòa Minzy herself joined in, changing her tone to match Lê Hương's wild rendition, creating a hilarious mix of off-pitch vocals. The sight of these two pretty ladies singing out of tune was something no one could forget.

11. Hoài Minh - Thanh Duy (Season 2 - Episode 3)
In this episode, Thanh Duy teamed up with contestant Hoài Minh to perform the song 'Lỗi ở yêu thương.' Hoài Minh, a handsome young man, gave the audience high hopes for a great performance with Thanh Duy. However, from the very first note, Hoài Minh stunned everyone with his hilariously off-key singing. The real moment of surprise came when Thanh Duy, unable to hold back, joined in with his own equally bad vocals, which had the audience roaring with laughter. Comedian Thu Trang was visibly excited to see Thanh Duy 'catch' Hoài Minh's unique vocal style.
After the performance, Trấn Thành humorously likened their duet to a symphony – one leading, the other following. Hoài Minh, a salesman, shared his dream of becoming a singer. Trường Giang, in a playful mood, asked them to perform an acapella segment, but Hoài Minh’s still off-key notes had the audience laughing uncontrollably. Thanh Duy, on the other hand, jokingly hoped that Hoài Minh would not become a singer and steal his career.

12. Quốc Đăng - Trung Quân Idol (Season 2 - Episode 1)
In the final segment of Episode 1, Season 2, the duet between Trung Quân and the young singer Quốc Đăng had the audience laughing hysterically. Just like Văn Mai Hương’s duet earlier, Quốc Đăng’s voice was so off-pitch it made the audience cringe. Trung Quân Idol had to sit down, while Văn Mai Hương couldn’t stop laughing. Host Đại Nghĩa exclaimed that the ‘rainmaker’ had met the ‘joker,’ and comedian from Quảng region humorously compared Quốc Đăng to 'Monkey King just out of the mountain.'
Despite the audience's reactions and the guest’s laughter, Quốc Đăng remained confident in his performance. He danced energetically, causing Trung Quân to stop repeatedly because of how funny it was. To add to the fun, Quốc Đăng pulled Trấn Thành and Trường Giang onto the stage to dance along to 'Hold Me Tonight,' keeping the crowd in stitches. This hilarious performance was the result of a questionable contestant choice from Trấn Thành - Thu Trang and Trung Quân's team.

13. Hoàng Yến My and Tóc Tiên (Episode 1)
In the debut episode of the show 'Giọng ải giọng ai,' guest singer Tóc Tiên made a poor choice by selecting a contestant with a disastrous voice for the final round. This led to a hilarious duet where Yến My constantly missed the notes and sang off-key, yet danced energetically, causing the entire room to burst into laughter. Her terrible singing paired with fiery dance moves turned her performance into a comedic highlight of the show. Anyone who re-watches this performance can’t help but laugh and sympathize with Tóc Tiên. The 'flawed' version of 'Ngày Mai' turned out to be more of a comedy skit than a musical number, as the audience described it.

14. Tùng Anh and Lương Bích Hữu (Episode 11)
In this episode, the handsome young man Tùng Anh caused quite a stir with his stunning looks. Everyone expected this charming face to deliver an amazing performance alongside the beautiful singer Lương Bích Hữu. However, to everyone's surprise, Tùng Anh's singing voice was far from impressive, leaving the audience and especially Lương Bích Hữu disappointed.
As soon as he started singing, the crowd couldn’t help but laugh. The duet between Tùng Anh and Lương Bích Hữu lacked harmony, and the performance became a failure for Lương Bích Hữu, who unfortunately chose a less-than-ideal voice. Despite the vocal misstep, it ended up being a highly entertaining moment for both the audience and the guest artists.

15. Bùi Thị Thúy Vi and Hariwon (Episode 9)
The disastrous singing of this beautiful lady completely overshadowed Hariwon, turning the performance into a hilarious spectacle. Hariwon and the audience could only laugh when she started singing. Her striking appearance led everyone to expect a ‘second Lệ Quyên,’ but that illusion shattered the moment she began to sing. From the pitch to the overall execution, it was a cover gone wrong. This choice proved that it wasn’t Hariwon's day, as she repeatedly picked singers with poor voices. Both Hariwon and the audience could only chuckle, and she even struggled to sing along with this off-key performer.

