If you looked at the Korean music charts right now, you might notice something surprising.
The biggest K-pop conversation in late September 2026 isn’t being dominated by the same handful of names that usually appear in global headlines.
Instead, Soyeon, RESCENE, CORTIS, I.O.I, and other artists are taking up major positions on the charts.
And one song in particular has suddenly become impossible to ignore.
Soyeon Takes the Top Spot
Soyeon’s “I’m gonna TOESA” has moved to No. 1 on Soompi’s September Week 4 K-pop chart, giving the i-dle member her first No. 1 solo song on that chart. The track moved up one position from the previous week.
But the story becomes even more interesting when we look at Korea’s real-time Melon chart.
As of September 29, Soyeon’s Korean-language version, “퇴사할게여 (Narr. 기안84),” was sitting at No. 1 on Melon’s Top 100. RESCENE’s “LOVE ATTACK” was No. 2, while I.O.I’s “갑자기” was No. 3.
That means Soyeon isn’t simply benefiting from international fan interest.
Her music is also performing strongly on a major Korean domestic chart.
CORTIS Is Still Hanging Around
Another name worth watching is CORTIS.
Their song “REDRED” climbed three positions to No. 2 on the latest Soompi chart. Even more interestingly, the song has now spent 22 weeks on that chart.
Twenty-two weeks is a very different story from a song that explodes for two weeks and disappears.
“REDRED” has shown staying power.
On the KBS World September Week 4 chart, CORTIS also moved up to No. 3, while RESCENE appeared at No. 5 with “LOVE ATTACK” and No. 9 with “Pretty Girl.”
The chart is beginning to tell a broader story about what listeners are actually returning to.
RESCENE Is Another Name to Watch
RESCENE’s presence is particularly noticeable.
The group has multiple songs appearing high on current Korean charts. On Melon’s Top 100, “LOVE ATTACK” was No. 2 and “Deja Vu” was No. 4 on September 29.
On Soompi’s weekly chart, “Pretty Girl” remained at No. 3, while “LOVE ATTACK” also performed strongly on other Korean chart measurements.
That kind of chart presence suggests that RESCENE is not relying on just one viral track.
Several songs are keeping the group visible at the same time.
Even I.O.I Is Back in the Conversation
Then there is I.O.I.
The group returned to the charts with “Suddenly,” which reached No. 3 on Melon’s Top 100 on September 29. It also appeared at No. 6 on KBS World’s weekly Top 10.
That is notable because I.O.I belongs to an earlier generation of K-pop’s idol history.
Its appearance alongside newer acts such as CORTIS and RESCENE creates an unusual mix of generations on the current charts.
So What Is Happening to K-pop Right Now?
The answer may be simpler than it first appears.
K-pop is becoming increasingly difficult to describe through only a few superstar names.
BTS and BLACKPINK remain enormous global forces, and their recent VMAs results once again demonstrated their international influence.
But the Korean charts show another side of the industry.
Songs from artists at very different stages of their careers are competing for attention at the same time.
A veteran idol and producer like Soyeon can take No. 1 with a solo track. A newer group like CORTIS can maintain a song’s momentum for months. RESCENE can place multiple songs near the top. And I.O.I can return to the upper reaches of the chart.
That’s a much more complicated picture than simply asking, “Who is the biggest K-pop group?”
The Bigger K-pop Story May Be Happening Under the Radar
For international fans, the most interesting part of the current chart may actually be the names they don’t see every day on global headlines.
The September 2026 charts are showing that K-pop’s domestic market has its own rhythm.
And sometimes, the songs making the biggest noise in Korea are not necessarily the songs dominating international social media.
Right now, Soyeon’s rise is the clearest example.
She has moved from being known primarily as a member and creative force within i-dle to having a major solo chart moment of her own.
And if the current charts are telling us anything, September 2026 may be less about one superstar dominating K-pop—and more about a much wider group of artists fighting for the spotlight.