Hearts2Hearts “Lemon Tang” Lip Sync Debate Follows Busan Festival Stage

Hearts2Hearts’ “Lemon Tang” stage at the 2026 Busan One Asia Festival has become the focus of an online lip-sync debate after a community post claimed the group used handheld microphones while relying on a recorded vocal track. The Hearts2Hearts lip sync discussion centers on a reported moment around the 1:51 mark, when Stella allegedly did not lift her microphone while her vocal continued during the performance.¹

Koreaboo reported on June 30, 2026, that the criticism originated from a Nate Pann post and that reactions from netizens were divided. The report did not cite an official response from SM Entertainment regarding the allegation.¹

“Lemon Tang” Stage Draws Lip Sync Allegation

The controversy is narrow but visible: it concerns a specific “Lemon Tang” festival performance, the use of handheld microphones, and whether the stage presentation created an expectation of live singing. The online poster quoted in the report criticized the act of carrying handheld microphones while allegedly lip-syncing, saying in translation, “I really don’t understand lip-syncing with handheld microphones in Busan.”¹

The cited report describes the public response as split rather than uniform. Some commenters treated the moment as evidence that the stage was not fully live, while others pushed back or placed the issue in the wider context of idol performance practice. The available source material does not provide a technical audio analysis, an official performance feed review, or a statement from the agency clarifying the stage’s vocal setup.

That distinction matters because the confirmed facts are limited. What is documented is the allegation, the highlighted moment involving Stella, the use of handheld microphones as part of the criticism, and the absence of a cited SM Entertainment response in the report. The source material does not confirm whether the entire performance was lip-synced, whether partial live vocals were used, or whether any broadcast or festival production conditions shaped the stage.

Comeback Context Behind “Lemon Tang”

The debate arrived during the promotional period for Hearts2Hearts’ second EP, “Lemon Tang.” Aju Press reported that the EP was scheduled for release at 6 p.m. on June 22, 2026, citing SM Entertainment, and said the album includes six tracks, including the title track and “RUDE!”² Celeb Confirmed had earlier reported on June 1 that SM Entertainment announced the June 22 release and that physical album preorders began the same day.³

The title track was described by Aju Press as a bright dance-pop song, with its music video planned for release on the SMTOWN YouTube channel at the same time as the album.² The Korea Times reported from the group’s June 22 press event at Blue Square in Seoul, where Hearts2Hearts performed “Lemon Tang” and discussed the release. At that event, Jiwoo described the song’s message by saying, “‘Lemon Tang’ is more about how things turn sweet and bright when you’re with someone else.”⁴

The release followed promotional previews that emphasized performance. Sports Donga reported on June 17 that Hearts2Hearts previewed part of the “Lemon Tang” audio and performance through official TikTok, Instagram Reels, and YouTube Shorts channels. The report described dynamic formations, a lemon-like hand gesture in the chorus, and 4-to-4 symmetry in the choreography, adding that choreographer Jo Nain participated again after working on “FOCUS” and “RUDE!”⁵

Those details help explain why a performance-related dispute gained attention. “Lemon Tang” was presented not only as a new recording but also as a choreographed comeback centered on recognizable formations and gestures. The Busan festival criticism therefore landed during a period when the group’s stage execution, visual arrangement, and live appearances were already part of the release narrative.

Sales Momentum Continues Amid Debate

The lip-sync discussion also coincided with strong commercial reporting for “Lemon Tang.” Newsis, via Donga, reported on June 30 that SM Entertainment and Hanteo Chart said the EP sold 592,312 copies in its first week after its June 22 release. The same report said the album topped Circle’s weekly retail album chart and that the title track reached No. 1 on QQ Music’s K-pop weekly and rising charts.⁶

That sales context does not resolve the performance allegation, but it shows that the debate emerged during a high-visibility comeback period rather than after promotions had faded. Newsis also reported that the group had completed its first week of comeback stages and domestic festival performances, with further music-show appearances listed in the report.⁶

The available sources identify Hearts2Hearts as an eight-member group and place “Lemon Tang” within a rollout that included a press event, short-form performance previews, a six-track EP, and music-show and festival activity. The same sources do not provide any official agency position on the Busan lip-sync claim.

For now, the “Lemon Tang” lip-sync debate rests on a publicly circulated allegation about one festival stage and the divided reaction that followed. Without a cited statement from SM Entertainment or further verified technical details, the confirmed record is limited to the reported Busan performance criticism, the comeback timeline, and the continuing commercial activity around Hearts2Hearts’ second EP.

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Cloi Lee

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