The Seoul show for BABYMONSTER’s tour was already very popular. All three shows of the “CHOOM” tour at the Jamsil Indoor Stadium from June 26–28 sold out quickly. The biggest topic after the shows was Ahyeon’s live version of “Problem” by Ariana Grande.
Ahyeon of BABYMONSTER performs Problem by Ariana Grande at the group's concert today. pic.twitter.com/Zi63gzE3S7
— About Music (@AboutMusicYT) June 26, 2026
The performance got a lot of attention because the song is so hard to sing. When performing live on stage, the focus is naturally on the singer’s real, unedited voice. Critics say Ahyeon’s voice sounds strained, and many fans are calling her high notes “screaming” instead of controlled singing. This has led some to say she “ruined” the emotional side of Ariana Grande’s “Problem” by choosing power over a healthy vocal mix, making the performance feel forced.
Other fans admired Ahyeon for attempting such a challenging song in front of a huge, packed stadium. People think her powerful singing is great and that her live vocals sound real and unedited.
Since then, fans are divided: some call the performance “screechy,” while others think the criticism is unfair. Many people are talking about vocal strain, and some fans are worried about Ahyeon’s vocal health if she keeps singing that way. They argue that this level of intensity makes it difficult for her to control her voice.
