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YSM (와이에스엠) is an eight-member girl group under Muses Morph Entertainment. Consisting of Koo Hyoryeon, Woo Heejeong, Woo Yeonseung, Laura Son, Park Seoneun, Harumi, Zara, and Kim Chaena, the group debuted on May 7, 2003, with the studio album I See You See Me.
Suspected to have silently disbanded following the closure of Haejung Entertainment sometime in 2011, the group was suddenly announced to be making a comeback slated for September of 2024, which will feature an entirely new generation members.
The group revolves around a generation concept, with members commonly being added together as a "generation". Currently, the group is in its second generation of members.
History[]
2003-2010[]
2003: Debut with I See You See Me, lineup changes, "Moon Moon"[]
With the original 5 member lineup, consisting of Hong Byeoljji, Chu Jungeun, Kang Hyemin, Gam Inhye, and Jin Kyungsuk, the group made their debut on May 7, 2003, with the studio album I See You See Me. The title track "YeaYeaYea" gained huge attention due to it being a remake of BABY V.O.X's "YaYaYa". The group was criticized of being poorly trained and was rushed to debut. Shortly after promotions ended, Byeoljji, Jungeun, and Hyemin departed from the group. Inhye and Kyungsuk both promoted as a duo and released a single titled "Moon Moon", which showed the duo's vocals.
2004: Lineup changes, Maybe Baby, hiatus[]
With new members Jung Seojin, Eogeum Yooeun, and Jang Hyunseo, the group made their first comeback with their second studio album on January 6, 2004, titled Maybe Baby. The group gained notable exposure, for negative reasons. During their showcase, member Seojin notably collapsed on stage and was rushed to the hospital. It was soon discovered that Seojin happened to be diagnosed with an illness called Cerebral Hypoxia, that further decreased the amount of oxygen to the brain. Haejung announced Seojin's hiatus, however Seojin, along with Hyunseo, Kyungsuk, and Inhye departed a month later. Since Yooeun was the only member remaining, the group went on a hiatus for the rest of the year.
2005: Lineup changes, LovelyDovelyLove, Can You[]
A new 10 member lineup was revealed for their upcoming comeback. consisting of member Yooeun and new members Kang Dami, Yang Jui, Seo Chaejoo, Do Minjin, Woo Youngmi, Bang Yongchae, Ha Eunwoo, Yook Songhwa, and Chae Haeun. They released their third studio album on March 7, 2005, titled LovelyDovelyLove. The group gained noticable attention for the album's mixture of trot and pop, along with tearful ballads as bsides. After the release, all members departed from the group, which resulted in 6 new members: Han Bit, Tae Yerim, Kwak Gyuri, Sun Mina, Bang Miyeon, and Sunwoo Doha. They then released their first mini album on July 6, titled Can You. Shortly after promotions ended, all members, again, departed from the group. The group then added 2 members: Bae Kwangsun and Namgung Yoowon.
2006-2008: Lineup changes, "Leave Now", "You And Me", "Parents", "Will We Love", ShaSha! See The Light[]
The duo promoted for 2 years, releasing 4 ballad singles, "Leave Now", "You And Me", "Parents", and "Will We Love". At the end of 2007, 5 new members were added: Hwangbo Wujung, Mubon Jaekyung, Hyun Garam, Pyo Nabi, and Son Noeul were added. However, Wujung and Jaekyung left shortly after their additions, along with Kwangsun and Yoowon and were replaced with Ji Yoonbin and Eun Jiyun. The group released their second mini album, titled ShaSha! See The Light on January 27, 2008. Shortly after promotions ended, the lineup, yet again, departed.
2009-2011: "Do You", "YOOHOO", lineup changes, presumed disbandment[]
New members Yeom Chanhee, Lee Bohyung, Ong Jayoung, Byeon Seoni, Cho Sungmi, and Jung Yooyeong released a fan-dedicated single titled "Do You" on July 7, 2009. The single was supposed to call back on the beginnings, controversies, and member lineup changes back then, and the song appreciated fans for supporting them no matter what. Shortly afterwards, member Chanhee left the group
The group released what would be their last song titled "YOOHOO" on January 6, 2010. In February, the label filed for bankruptcy and closed their doors, resulting in the label's defunct and the group's unofficial disbandment a year later.
2024: Comeback announcement, "Sweet Loco", New Sight[]
On July 29, 2024, it was reported that YSM will make their first comeback in over 14 years under the management of Muses Morph Entertainment. The comeback is set to feature an entirely new generation of members. On the same day, the lineup was announced to consist of Woo Yeonseung, Yeo Dasom, Woo Heejeong, Koo Hyoryeon, and Seo Chaesoo. Furthermore, the group will now operate in a generational system, where members can live and join as they wish.
On September 27, 2024, the group announced the release of a pre-release single "Sweet Loco", set to be released the next day. On the same day, the group announced their third mini album New Sight.
2025-present: Departures of Seo Chaesoo and Yeo Dasom, second generation, Heart Boss[]
On June 15, 2025, the group announced the departures of Seo Chaesoo and Yeo Dasom. In addition, the group announced that they have selected members for the second generation of members. The next day, Laura Son, Park Seoneun, Harumi, Zara, and Kim Chaena were introduced as the second generation of members that will be joining YSM. On June 22, 2025, the group announced their fourth mini album Heart Boss, set to be released on July 4, 2025.
Members[]
| # | Name | Position(s) | Nationality | Year(s) Active |
|---|---|---|---|---|
| 1, 2 | Koo Hyoryeon (구효련) | 1st Generation Leader, Lead Dancer, Lead Rapper | Korean | 2024-present |
| 1, 2 | Woo Heejeong (우희정) | Main Rapper, 1st Generation Center | Korean | 2024-present |
| 1, 2 | Woo Yeonseung (우연승) | Lead Dancer, Lead Vocalist, 1st Generation Maknae | Korean | 2024-present |
| 2 | Laura Son (로라 손) | 2nd Generation Leader, Main Dancer, Lead Vocalist, Choreographer | British-Korean | 2025-present |
| 2 | Park Seoneun (박선은) | Main Vocalist | Korean | 2025-present |
| 2 | Zara (자라) | Lead Vocalist, Lead Rapper, 2nd Generation Center | Malaysian | 2025-present |
| 2 | Harumi (하루미) | Main Vocalist, Lead Dancer | Japanese | 2025-present |
| 2 | Kim Chaena (김채나) | Main Dancer, Vocalist, Rapper, Maknae | Korean | 2025-present |
| Former | ||||
| 1 | Seo Chaesoo (서채수) | Main Vocalist, Lead Dancer, Face of the Group | Korean | 2024-2025 |
| 1 | Yeo Dasom (여다솜) | Lead Vocalist, Rapper, Visual | Korean | 2024-2025 |
Timeline[]
Current[]
Former[]
Discography[]
Studio Albums[]
- I See You See Me (2003)
- Maybe Baby (2004)
- LovelyDovelyLove (2005)
Mini Albums[]
- Can You (2005)
- ShaSha! See The Light (2008)
- New Sight (2024)
- Heart Boss (2025)
Singles[]
- "Moon Moon" (2003)
- "Leave Now" (2006)
- "You And Me" (2007)
- "Parents" (2007)
- "Will We Love" (2007)
- "Do You" (2008)
- "YOOHOO" (2009)
- "Sweet Loco" (2024)
SNS[]
- YouTube: YSM Official YouTube
- Instagram: ysmofficial
- Twitter/X: @ysmofficialx
- Weibo: ysmofficial
- Facebook: @ysmofficialfb
- Xiaohongshu: @rednoteysmoff
- Bluesky: @ysmofficialbs
- TikTok: YSM Official TiKTok
- Douyin: ysmofficial
Spotify Bio[]
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426,327 monthly listeners (2025)
  YSM, a backronym for "You See Me", is a rising girl group that has existed ever since the ending of the first generation. Disbanding in 2011 before being "re-booted" with an entirely new lineup, YSM is slowly climbing the charts with their releases. Operating on a generational system, where members may leave and join any time, it shows uniqueness in the group. |
[]
| 𝚈𝚂𝙼 | ||
|---|---|---|
| Members | ||
| ɦʏօʀʏɛօռ • ɦɛɛʝɛօռɢ • ʏɛօռֆɛʊռɢ • ʟǟʊʀǟ • ֆɛօռɛʊռ • ʐǟʀǟ • ɦǟʀʊʍɨ • ƈɦǟɛռǟ | ||
| ƈɦǟɛֆօօ • ɖǟֆօʍ | ||
| Discography | ||
| Korean | Studio albums | 𝐼 𝒮𝑒𝑒 𝒴𝑜𝓊 𝒮𝑒𝑒 𝑀𝑒 • 𝑀𝒶𝓎𝒷𝑒 𝐵𝒶𝒷𝓎 • 𝐿𝑜𝓋𝑒𝓁𝓎𝒟𝑜𝓋𝑒𝓁𝓎𝐿𝑜𝓋𝑒 |
| Mini albums | 𝒞𝒶𝓃 𝒴𝑜𝓊 • 𝒮𝒽𝒶𝒮𝒽𝒶! 𝒮𝑒𝑒 𝒯𝒽𝑒 𝐿𝒾𝑔𝒽𝓉 • 𝒩𝑒𝓌 𝒮𝒾𝑔𝒽𝓉 • 𝐻𝑒𝒶𝓇𝓉 𝐵𝑜𝓈𝓈 | |
| Digital singles | "𝑀𝑜𝑜𝓃 𝑀𝑜𝑜𝓃" • "𝐿𝑒𝒶𝓋𝑒 𝒩𝑜𝓌" • "𝒴𝑜𝓊 𝒜𝓃𝒹 𝑀𝑒" • "𝒫𝒶𝓇𝑒𝓃𝓉𝓈" • "𝒲𝒾𝓁𝓁 𝒲𝑒 𝐿𝑜𝓋𝑒" • "𝒟𝑜 𝒴𝑜𝓊" • "𝒴𝒪𝒪𝐻𝒪𝒪" • "𝒮𝓌𝑒𝑒𝓉 𝐿𝑜𝒸𝑜" | |
| Related topics | ||
| ᴍᴜꜱᴇꜱ ᴍᴏʀᴘʜ ᴇɴᴛᴇʀᴛᴀɪɴᴍᴇɴᴛ • ʜᴀᴇᴊᴜɴɢ ᴇɴᴛᴇʀᴛᴀɪɴᴍᴇɴᴛ | ||