OH MY GIRL at Ten: Why 'Oh My' and the Milky Way Concert Mark More Than a Milestone

OH MY GIRL releases their 10th anniversary single "Oh My" tomorrow, April 9. The release arrives at an unusual juncture for a group that has spent a decade navigating K-pop's most persistent structural challenge: sustaining group identity when member trajectories begin to diverge. The single, credited to longtime collaborator Seo Ji-eum and co-written by member Mimi, is designed as a tribute to the decade and to the fanbase that has made it possible. What makes April 9 more than a routine anniversary release is the story the decade itself contains.

Ten Years: The Landscape OH MY GIRL Has Survived

OH MY GIRL debuted on April 21, 2015, with WM Entertainment — a mid-tier agency that has since developed a reputation for nurturing acts with genuine longevity rather than engineering short-burst commercial peaks. The group's early years were defined by the challenges that confront most K-pop acts outside the top three agencies: irregular comeback schedules, limited broadcast exposure, and the particular difficulty of breaking through in a market where new fourth-generation groups debut faster than audiences can track them. Their breakthrough came gradually and then rapidly, with "Bungee (Fall in Love)" (2018) and "Dolphin" (2021) converting a dedicated core fanbase into genuine public recognition.

Ten years in the K-pop industry is not routine. Of the groups that debuted in 2015, the number that have maintained their original lineup or something close to it through 2025 is small. The industry's structural pressures — contract renewal cycles, solo debut opportunities, dating restrictions gradually loosening, members building individual profiles that can eventually outgrow the group context — mean that anniversary milestones are often shadowed by the departures and restructurings that preceded them. OH MY GIRL has not been immune to this: the six-member lineup releasing "Oh My" is not identical in composition to every version of the group that preceded it. But six members returning together for a 10th anniversary statement is itself a signal that the group's collective identity has survived the decade intact enough to be worth commemorating.

What "Oh My" Is and Who Made It

The track is described as blending groovy bass lines, choppy synths, and future electronic sounds into a playful, high-energy single that includes nods to some of the group's most recognizable past material. That retroactive referencing — embedding callbacks to a catalog into an anniversary track — is a specific creative choice that distinguishes anniversary releases from standard comebacks. The intent is not just to release new music but to give fans a map of the decade, to create a song that functions simultaneously as a present moment and as a collection of past ones.

Member Mimi's co-writing credit on "Oh My" is consistent with her established role as one of OH MY GIRL's internal creative voices. Her participation in songwriting across several of their releases has been part of how WM Entertainment has positioned the group as actively involved in their own output rather than purely as performers of externally produced material. In the context of a 10th anniversary single, a writing credit from a member carries additional meaning — it makes the tribute to the decade partly authored by someone who lived through it.

The Milky Way Concert and What Anniversary Celebrations Signal

The single is accompanied by a solo concert event — "2025 OH MY GIRL CONCERT Milky Way" — scheduled for April 19 and 20 at Olympic Hall in Olympic Park, Seoul. The venue choice matters: Olympic Hall seats approximately 2,300, which is not a stadium and not an arena, but which is a meaningful benchmark for a group at OH MY GIRL's commercial level. Filling two nights there on the strength of an anniversary alone — without a full album to promote — indicates that their fanbase has the density and the commitment to turn out for the group itself rather than just for new material.

Anniversary concerts in K-pop serve a different function than standard comeback tours. They are exercises in collective memory, designed to give fans the experience of participating in a shared history rather than simply consuming a new product. The setlist at a 10th anniversary concert is expected to include early material that has not been performed in years, creating the specific emotional texture of reunion that anniversary events generate. For Miracle, OH MY GIRL's fanbase, the Milky Way concert is likely to carry that weight.

Ten Years and What Comes Next

OH MY GIRL's decade is bookended by two different K-pop landscapes. In 2015, they debuted into an industry defined by third-generation girl groups — TWICE, BLACKPINK, and their contemporaries — who were in the process of establishing the commercial templates that fourth-generation groups would inherit and disrupt. In 2025, they release their 10th anniversary single into a market where they are among the most experienced active acts, with a catalog that now stretches far enough back to qualify as legacy material for newer fans discovering K-pop for the first time.

The WM Entertainment announcement in early 2026 would confirm what the anniversary preparations already suggested — that all six members have aligned around a continued full-group comeback slate, an agreement reached across members now represented by multiple agencies. "Oh My" is the opening statement of that renewed commitment, timed to the anniversary as both a tribute and a relaunch. At ten years, OH MY GIRL is not operating in survival mode. They are choosing to continue, which is its own kind of statement.