NMIXX has moved into full broadcast promotions for “Heavy Serenade,” placing its live performance and vocal delivery at the center of the group’s latest comeback cycle. The group began music show activities for the title track on Mnet’s “M Countdown” on May 14, 2026, following the May 11 release of its fifth mini album, also titled “Heavy Serenade.” 1
The focus on NMIXX live vocals has been reinforced by several performance-related releases around the comeback. Reports noted that a stage practice video released on May 13 drew attention for showing the group’s live performance capability, while a vocal-version live video featuring Haewon and Hanroro was also released during the promotional rollout. 1 2
NMIXX ‘Heavy Serenade’ Live Schedule Begins

NMIXX’s first confirmed music show stage for “Heavy Serenade” was Mnet’s “M Countdown” on May 14. The group’s broadcast schedule continued with KBS2’s “Music Bank” on May 15, followed by MBC’s “Show! Music Core” on May 16 and SBS’s “Inkigayo” on May 17. 1
The timing places the live stages immediately after the album release week. NMIXX released the fifth mini album “Heavy Serenade” and the title track of the same name on May 11, 2026. The title song and album were released at 6 p.m. that day, following a countdown live scheduled for 4:40 p.m. 3
The title track’s performance rollout has included both broadcast stages and supplementary video content. Sports Kyunghyang reported that the May 13 stage practice video showed stable live performance strength and received a response from viewers, while Sports Donga reported that Haewon and Hanroro’s vocal-version live video was among the related releases tied to the comeback. 1 2
| Item | Confirmed detail |
|---|---|
| Group | NMIXX |
| Release | Fifth mini album “Heavy Serenade” |
| Album and title track release date | May 11, 2026 |
| First music show stage | Mnet “M Countdown,” May 14, 2026 |
| Additional music show schedule | KBS2 “Music Bank” on May 15, MBC “Show! Music Core” on May 16, SBS “Inkigayo” on May 17 |
| Reported chart position | Melon Top 100 No. 13 at 0:00 on May 14, 2026 |
| Reported music video milestone | More than 10 million YouTube views by the morning of May 13, 2026 |
Song Details Put Vocals And Lyrics In Focus
“Heavy Serenade” is described as a track that combines the members’ vocals with lyrical writing by Hanroro, who was credited as the sole lyricist for the title song. 2 The broader sound of the song was reported to bring electronic music elements including trance, acid and drum and bass into a pop framework. 4
The album contains six tracks: “Heavy Serenade,” “Crescendo,” “LOUD,” “IDESERVEIT,” “Different Girl” and “Superior.” 4 The tracklist makes “Heavy Serenade” the central promotional song, while “Crescendo” had a separate pre-release music video schedule on April 28. 3
The group’s own release Q&A, distributed through its agency and reported by Chosun Biz, framed the song around a love narrative and vocal expression. Lily described the song with the phrase “a love so deep it feels heavy,” while Haewon referred to a “chameleon-like vocal” point. Sullyoon said she hoped the song would gain a modifier connected to wedding congratulatory songs. 5
Those comments align with the way the comeback has been presented in Korean entertainment coverage: not only as a standard title-track promotion, but as a release that puts vocal color, performance stability and stage delivery under public attention. The available reports do not provide a full technical breakdown of the live stages, but they consistently identify live performance and vocal content as part of the “Heavy Serenade” rollout.
Music Video And Chart Response Add Context
The “Heavy Serenade” promotion has also been accompanied by early digital and video indicators. Sports Donga reported that the track ranked No. 13 on Melon Top 100 at 0:00 on May 14. 2 iMBC Entertainment reported that the music video reached No. 2 on YouTube Trending Worldwide shortly after release and surpassed 10 million views by the morning of May 13. 6
JYP Entertainment also released behind-the-scenes material for the “Heavy Serenade” music video, extending the comeback’s visual promotion beyond the main video itself. 6 Earlier, the agency had released a music video teaser through official social channels at 0:00 on May 10, one day before the album’s release. 4

With music show stages now underway, the “Heavy Serenade” campaign is centered on a compact sequence of release-week activity: the May 11 album launch, the May 13 stage practice video, the May 14 start of broadcast promotions and scheduled appearances through May 17. The available source material supports a clear picture of NMIXX’s current focus: using “Heavy Serenade” live stages and vocal-centered content to define the group’s latest comeback period.
References
- NMIXX, ‘엠카운트다운’부터 타이틀곡 ‘Heavy Serenade’ 음악 방송 활동 돌입 (스포츠경향, 2026-05-14)
- 엔믹스, ‘헤비 세레나데’ 본격 활동…재킷 비하인드 컷 공개 (스포츠동아, 2026-05-14)
- 엔믹스, 5월 11일 컴백…타이틀곡 '헤비 세레나데' (더팩트, 2026-04-14)
- 설렘 가득 '컴백 D-1'…엔믹스, 엔써 향한 'Heavy Serenade' (전자신문, 2026-05-10)
- 엔믹스 "'헤비 세레나데', 사랑으로 가득한 노래…축가 관련 수식어 붙었으면" (조선비즈, 2026-05-11)
- 엔믹스, 신곡 '헤비 세레나데' MV 비하인드 컷 공개 (iMBC연예, 2026-05-13)