KWAVESCOPE · AGENCY GUIDE 11
RBW
A music-production business connecting MAMAMOO, ONEWE, solo singers and a wider family of labels.
Last reviewed October 24, 2026 · Back to K-POP Agencies
Company at a glance
| Item | Details |
|---|---|
| Full name | RBW Inc. (Rainbowbridge World) |
| Company roots | Music production and artist-development businesses associated with Kim Do-hoon and Kim Jin-woo |
| Current core work | MAMAMOO group projects, SOLAR, MOON BYUL, ONEWE, music publishing and training |
| Wider label group | DSP Media and WM Entertainment, with distinct artist contracts and histories |
| Important roster changes | PURPLE KISS ended official group activities in November 2025; ONEUS exclusive RBW contracts ended February 2026 |
| 2025 consolidated revenue | Approximately KRW 46.5 billion; not the income of an individual act |
| Office | RBW Tower, 129 Jayang-ro, Gwangjin-gu, Seoul |
A production company that became a label family
RBW’s story begins with music-making. The business became widely associated with producer Kim Do-hoon, performer development and a system that connects artists with writers, arrangers and the practical skills needed for recordings. MAMAMOO brought that system public recognition through powerful vocals and a sense of performance personality.
Over time, the corporate story expanded beyond a single label. DSP Media and WM Entertainment added existing catalogues, management teams and recognizable music brands. That structure creates a common source of confusion: an artist connected to a subsidiary of RBW is not necessarily under the exact same personal management contract as an artist signed directly to RBW.
The distinction is especially important in 2026. Corporate ownership, a group-name agreement and a singer’s exclusive contract are three different facts. This guide identifies current activities, historic artists and subsidiaries separately rather than treating every old logo on a group website as evidence of an unchanged contract.
Current artists, company relationships and A–Z pages
The company and its affiliates have several layers. The following overview distinguishes direct label associations, group projects, subsidiaries and important former acts.
| Artist or label | Relationship in 2026 | KWaveScope page |
|---|---|---|
| MAMAMOO | Group discography and group-level work; member solo management may differ | MAMAMOO ↗ |
| SOLAR | Individual singer associated with RBW | SOLAR ↗ |
| MOON BYUL | Individual singer and rapper associated with RBW | MOON BYUL ↗ |
| ONEWE | Active five-member band with 2026 recording and concert activity | No verified KWaveScope A–Z profile link yet |
| DSP Media | Related subsidiary with a separate management history; KARD and other artists belong to its own roster | Separate label; no single group-page link |
| WM Entertainment | Related subsidiary known historically for B1A4, OH MY GIRL and ONF | Contracts changed; verify current management per artist |
| ONEUS | Historic RBW boy group; five exclusive agreements ended in February 2026 | Former RBW association, not current exclusive roster |
| PURPLE KISS | Historic RBW girl group; official group activities ended November 2025 | Former group, not an active 2026 lineup |
MAMAMOO and a group identity larger than individual contracts
MAMAMOO debuted in 2014 and became known for strong live vocals, characterful stage interaction and recordings that moved between soulful pop, dance and more restrained ballads. The group name is particularly useful when discussing RBW’s early commercial success, but its members’ individual careers now have different management arrangements.
SOLAR and MOON BYUL continue to release individual music while also taking part in projects connected to the group. WHEE IN and HWASA have followed separate solo-management paths, which does not erase their place in MAMAMOO’s musical identity. A company roster should describe both the group and the separate solo contracts accurately.
The 2026 group project 4WARD and its related international concert announcements demonstrate why contractual distinctions matter. A band or vocal group can come together for agreed group activities without requiring every member to sign identical solo contracts with the same agency.
A new listener may begin with ‘Mr. Ambiguous’, ‘Décalcomanie’, ‘HIP’ or ‘Starry Night’ and hear how the group’s sound has changed. Those recordings make clear that the legacy is musical rather than administrative.
ONEWE: a different expression of RBW songwriting
ONEWE is an instrumental band whose five members are YONGHOON, KANGHYUN, HARIN, DONGMYEONG and GIUK. Its catalogue often combines reflective lyrics, electric guitars and an attention to detail that differs from the staging of an idol dance group.
The band’s 2026 releases included the full album 面: Unknown Atlas, listed by RBW Japan on August 19. Its autumn Japan concert announcements show that the act remains an active part of the business. The release details should be distinguished from short-form promotional clips or fan-created uploads.
ONEWE’s importance in this guide is also a reminder that a company’s creative identity can be defined by both its vocal groups and its bands. The company builds around music production, not one compulsory performance format.
The wider business: DSP Media and WM Entertainment
RBW’s ownership of other entertainment companies gives it access to catalogs and teams whose identities began independently. DSP Media is associated with acts including KARD and later-generation projects. WM Entertainment is linked historically to B1A4, OH MY GIRL and ONF. Each name needs its own dated management check.
The owner of a subsidiary is not automatically the direct booking contact for every performer. This is particularly relevant to OH MY GIRL, whose members have different individual agreements, and to artists whose exclusive contracts changed during 2025 or 2026.
It is more accurate to describe RBW as a music and entertainment group with a network of operations than to label every act in the network as an RBW-signed artist. The distinction also matters when comparing company revenue: consolidated figures may include businesses beyond the original agency.
Why ONEUS and PURPLE KISS belong in the history section
ONEUS debuted in 2019 under RBW, and its five members were prominent in the company’s performance-oriented boy-group catalogue. However, RBW’s official notice dated January 2, 2026 stated that the members’ exclusive contracts would conclude at the end of February. The announcement also emphasized that ONEUS as a group intended to continue, which is different from saying the group had disbanded.
PURPLE KISS debuted in 2021 and developed a striking musical identity, with ambitious arrangements and strong performance character. RBW announced in August 2025 that the group’s activities would end in November, followed by a formal concluding notice on November 16, 2025. As a result, PURPLE KISS should not be counted among actively promoting RBW girl groups in October 2026.
Both names remain important to RBW’s catalogue. Leaving them out would make the company’s history incomplete; listing them as current exclusive artists would be misleading. Accurate dates make it possible to do both things properly.
The financial picture and why consolidated scope matters
Publicly available 2025 company summaries report approximately KRW 46.5 billion in consolidated revenue for RBW and a small positive operating result. That figure should not be confused with an individual MAMAMOO member’s earnings or the sales of a single subsidiary.
There are two reasons to be careful. First, the company owns or operates multiple label entities. Second, operating income is not the same as net profit or an artist’s contract income. A large music catalogue may generate a mix of recordings, live performances, licensing and business activity whose financial recognition differs by reporting period.
The safest comparison with another agency uses the same fiscal year, the same consolidated-versus-separate accounting basis and the same currency. As requested, this profile gives rounded amounts without directing readers to financial filings, investor pages or spreadsheets.
Company milestones
| Period | Development | Context |
|---|---|---|
| Early 2010s | RBW production and artist-development operations expanded | Company identity rooted in songwriting and training |
| 2014 | MAMAMOO debuted | Brought the label a widely recognized vocal group |
| 2019 | ONEUS debuted; ONEWE expanded under RBW | Broadened the catalogue into boy-group and band music |
| 2021 | PURPLE KISS debuted and RBW entered the public market | Expansion in artist development and corporate scale |
| 2021–2022 | Corporate acquisitions and the growth of the RBW family | DSP Media and WM Entertainment extended catalogues and markets |
| 2025 | PURPLE KISS officially ended group activities | Historical artist status changed |
| February 2026 | ONEUS members completed RBW exclusive contracts | The group intended to continue under a new arrangement |
| 2026 | MAMAMOO projects and ONEWE recordings and concerts continued | Active music identity alongside a changing roster |
Recordings and production culture
The phrase ‘music-production company’ means more than having a recording studio. It describes the systems that connect singers and instrumentalists with composition, arrangement, rehearsal and release planning. RBW’s history offers several different demonstrations of that idea: MAMAMOO’s harmonies, ONEWE’s instruments and the distinctive projects created across subsidiaries.
A label can offer shared infrastructure without making every act sound identical. A song written for a mature vocal ensemble may be inappropriate for a new band, and a concert set must fit the real performers rather than simply copying the recorded arrangement.
International fans benefit from separating what the company owns from what an artist chooses to make. That helps readers evaluate the music and follow current management notices without turning business ownership into an artistic ranking.
Office location and Google Maps
RBW publishes its office address as 129 Jayang-ro, Gwangjin-gu, Seoul, often written as RBW Tower in Jayang-dong. The building is an administrative and production workplace; current access conditions should be checked before visiting.
Find the office area on Google Maps ↗
The headquarters is not a ticketed public museum and an artist may have rehearsals or recordings elsewhere. Respect staff-only areas and nearby residents. Use individual show and pop-up announcements for ticketing, access times and permitted photography.
Auditions and the visitor perspective
RBW has operated music training, artist-development and audition programs. The exact eligibility, application form and location can differ between RBW itself and related labels such as DSP Media or WM Entertainment. Do not send a single application to an unrelated label assuming it reaches every subsidiary.
Use the current official channel for instructions. Record performances clearly without deceptive filters, avoid publishing private identification documents in public comments, and involve a guardian when the applicant is a minor.
Official resources
RBW Japan artist overview ↗ · MAMAMOO official site ↗. These sources cover current music and contact details; no financial document URLs are used.
Frequently asked questions
Is ONEUS still under an exclusive RBW contract in October 2026?
No. RBW announced that the five members’ exclusive contracts would end in February 2026. The announcement said the group would continue activities, so contract termination should not be described as a disbandment.
Is PURPLE KISS still active?
RBW formally ended the group’s official activities in November 2025. Their music remains an important part of the company’s history.
Are all four MAMAMOO members managed by RBW for solo work?
No. Individual solo contracts and group-level MAMAMOO projects must be separated. SOLAR and MOON BYUL retain RBW-related solo identities while WHEE IN and HWASA have followed different solo-management arrangements.
Who is part of ONEWE?
YONGHOON, KANGHYUN, HARIN, DONGMYEONG and GIUK.
Does RBW own other labels?
The wider RBW corporate family includes DSP Media and WM Entertainment. They have their own artist histories and arrangements.
How large is RBW financially?
Company summaries put 2025 consolidated revenue at roughly KRW 46.5 billion. It is not comparable to an artist’s personal revenue.
What to watch next
RBW’s future is best understood by following two parallel stories: the music being made by active groups and soloists, and the ownership and contract changes shaping its broader label family. Both stories matter, but they are not identical. Precision about that difference is what makes a company profile useful to readers.
Editorial note: This KWaveScope profile distinguishes company history from current artist contracts. Information about private events, auditions and company accounts can change. Financial figures are rounded and no audit, investor-relations or financial-report URLs have been inserted.