Jaehyun 99 Degrees Teaser Released Ahead of July 10 Single Launch

NCT’s official YouTube channel released the music video teaser for Jaehyun’s solo single “99 Degrees” on July 9, 2026, ahead of the track’s scheduled release at 6 p.m. KST on July 10. The Jaehyun 99 Degrees rollout also includes teaser images posted through NCT’s official Instagram on July 8, with the campaign connected to “EVERYTHING, ALL AT ONCE, NEO,” the NCT 2026 project referenced in the official social update. ^{1 2}

The single has been previewed in Korean entertainment coverage as a ballad with Jaehyun’s participation in writing and composing. OSEN reported that “99 Degrees” will be available through major domestic and global music platforms, including Melon, Spotify, Apple Music and QQ Music. ³

Jaehyun 99 Degrees Teaser Details

The July 9 teaser video is the latest confirmed official asset before the single’s release. NCT’s YouTube listing identifies the upload as “JAEHYUN 재현 ’99 Degrees’ MV Teaser” and credits SM Entertainment, while NCT’s Instagram teaser image post gives the same July 10, 2026, 6 p.m. KST release timing. ^{1 2}

The promotional schedule began before the video teaser. NCT’s official Instagram account posted teaser images for “99 Degrees” on July 8, one day before the YouTube teaser appeared and two days before the scheduled digital release. The Instagram post also ties the single to “EVERYTHING, ALL AT ONCE, NEO,” placing it within NCT’s 2026 campaign rather than presenting it as an isolated teaser drop. ²

Press coverage has consistently presented the release around three core details: timing, platform availability and Jaehyun’s creative role. OSEN reported on July 2 that Jaehyun would release “99 Degrees” on July 10 at 6 p.m. KST and that he participated in writing and composing the song. ³ BNT News also described the single as self-written and self-composed, adding that it presents a deeper emotional style through Jaehyun’s vocals. ⁴

Reported Sound and Theme

Sports Donga reported that “99 Degrees” is a ballad that opens with a delicate piano line and develops into a fuller band sound. The same report described the title as a metaphor built around 99 degrees, one degree short of boiling, with the lyrics using that image to express the idea of finding complete love within incompleteness. ⁵

BNT News presented a similar emotional frame, reporting that the song expresses love’s incompleteness and sincerity through Jaehyun’s warm vocals. The available source material does not include a full lyric sheet, a complete production credit list or a detailed breakdown of the music video concept beyond the official teaser listing and the published teaser image post. ⁴

The single follows several solo releases by Jaehyun that were named in coverage of the new track. Sports Donga cited “J,” “Unconditional,” “Horizon” and “Forever Only” while introducing “99 Degrees” as part of his solo work. ⁵

The release also follows the completion of Jaehyun’s “Mono” fan-con tour across five Asian regions. StarNews reported that the tour began in Seoul and continued through Macao, Jakarta, Bangkok and Taipei. The same report said “99 Degrees” was due on July 10 at 6 p.m. KST and described it as a song prepared for fans who had waited for him. ⁶

StarNews included Jaehyun’s Korean-language comments on the fan-con tour’s timing after his military discharge. In paraphrase, he said the fan-con was prepared because he wanted to greet Czennie first after returning, a detail that provides additional context for the tour and the single’s timing without changing the stated release facts. ⁶

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