The B-Side That Broke the Algorithm

Six years ago, it was a B-side nobody talked about. This week, it's the No. 1 trending video on YouTube in South Korea.

ITZY's "THAT'S A NO NO" — originally tucked away on the group's 2020 mini-album IT'z ME — got a second life on March 14, 2026, when JYP Entertainment dropped a dance practice video for the track. Within hours, the video climbed to the top of YouTube's trending chart in South Korea. No new album. No comeback announcement. Just a choreography video for a song that most casual listeners had probably forgotten existed.

So how does that happen?

The Anatomy of a Fan-Driven Revival

The short answer: the fans did it first, and the label followed.

Before the official dance practice dropped, clips of ITZY performing "THAT'S A NO NO" had been circulating across short-form platforms — TikTok, Instagram Reels, YouTube Shorts. Fans weren't just watching; they were organizing. Streaming parties, cover challenges, and coordinated social pushes created enough algorithmic momentum to surface the song to listeners who had never heard it.

This is what K-pop scholars sometimes call fandom-led curation — where the audience, not the label, decides which track deserves a second chance. JYP Entertainment recognized the groundswell and responded with a formal content drop, giving fans the high-quality visual they needed to keep the cycle going.

The dance practice format is particularly well-suited for this. Unlike a music video, it strips away the cinematic production and puts the choreography front and center. For fans who want to learn the moves — or just watch them obsessively — it's essential content. It also functions as a template for the cover dance community, which generates its own wave of derivative content and keeps the original in algorithmic circulation.

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This Isn't the First Time — But the Mechanism Is Different

Song revivals aren't new. Brave Girls' "Rollin'" resurfaced five years after its release in South Korea, pushed by a viral military fancam compilation. Kate Bush's "Running Up That Hill" hit No. 1 in the UK 37 years after its original release, thanks to Stranger Things. These are well-documented cases of external catalysts — a TV show, a viral video — reigniting interest in old music.

What makes "THAT'S A NO NO" different is the absence of an external catalyst. There was no drama placement, no celebrity endorsement, no meme moment. The revival was engineered almost entirely from within the fandom itself. That's a meaningful distinction. It suggests that dedicated fan communities have developed enough organizational capacity and platform literacy to move the needle on streaming charts without needing mainstream media as an intermediary.

For the music industry, this raises a question worth sitting with: if fans can effectively relaunch a track on their own, what exactly is the label's role in the content lifecycle anymore?

What Each Stakeholder Actually Gets

For JYP Entertainment, the calculus is straightforward. Reactivating catalog content costs a fraction of what a full comeback requires — no new recording sessions, no elaborate MV production, no promotional tour. A well-timed dance practice video can generate millions of views, streaming revenue, and renewed public interest in a group. It's an efficient use of existing IP.

For ITZY as artists, the revival is validation of a different kind. "THAT'S A NO NO" never got the promotional push that "WANNABE" did back in 2020. Seeing it trend #1 six years later, driven by fans who genuinely love the track, carries a different weight than a chart position manufactured by a label's marketing spend.

For the fans, the emotions are layered. There's genuine pride — we did this — alongside a more complicated awareness that their labor, their streaming hours and cover videos and social posts, is directly generating value for a corporation. The line between fan passion and unpaid marketing work has always been blurry in K-pop. Moments like this make it blurrier.

And for YouTube, this kind of organic trending moment is exactly the narrative the platform wants to tell about itself: that the algorithm surfaces what people actually love, not just what's being pushed.