Learn about TST (Top Secret), the K-pop boy group formed by JSL Company. Discover their history, members, discography, and latest updates.
 |
| Photo members of TST – Kpop Boy Group Also known as: Top Secret Active from: 2017 |
TST (일급비밀), formerly known as TopSecret and 7STONE was a talented South Korean Kpop boy group formed by JSL Company. Originally debuting as Top Secret in 2017, they rebranded as TST in 2018, winning the hearts of many fans worldwide. They debuted as 7 members: Ain, K, Wooyoung, Yonghyeon, Junghoon, Yohan and Kyeongha (former member). But currently only consisting of 4 members: Ain, K, Wooyoung, and Yonghyeon.
TST (Top Secret) Members Biodata
Detailed biodata of TST (Top Secret) members including Ain, K, Yohan, Wooyoung, Yonghyeon, and Junghoon.
Ain (Leader, Vocalist)
Real Name: Kim Jung Hoon (김정훈)
Birthday: May 15, 1994
Position: Leader, Vocalist
Fun Fact: Known for his strong leadership and deep voice.
K (Main Vocalist)
Real Name: Kim Sung Woo (김성우)
Birthday: March 16, 1995
Position: Main Vocalist
Fun Fact: Has a powerful and emotional singing voice.
Yohan (Vocalist, Rapper) [RIP 2020]
Real Name: Kim Jeong Hwan (김정환)
Birthday: April 16, 1992
Position: Vocalist, Rapper
Fun Fact: Loved by fans for his charismatic stage presence.
Wooyoung (Main Dancer)
Real Name: Lee Woo Young (이우영)
Birthday: January 24, 1996
Position: Main Dancer
Fun Fact: Known for his energetic dance moves and charming personality.
Yonghyeon (Vocalist)
Real Name: Oh Yong Hyeon (오용현)
Birthday: February 11, 1997
Position: Vocalist
Fun Fact: Has a soothing and unique vocal tone.
Junghoon (Rapper)
Real Name: Choi Jung Hoon (최정훈)
Birthday: October 23, 1998
Position: Rapper
Fun Fact: Known for his deep voice and smooth rap flow.
#TST K-pop, Top Secret K-pop, TST members biodata, Ain TST, K TST, Yohan TST, Wooyoung TST, Yonghyeon TST, Junghoon TST
History of TST (Top Secret)
The history and journey of TST (Top Secret), a South Korean boy group formed in 2017.
Formation and Debut (2017)
TST (Top Secret) was formed under JSL Company and debuted on January 4, 2017, with their first mini-album “Time’s Up”. The group initially consisted of seven members: Ain, K, Yohan, Wooyoung, Yonghyeon, Junghoon, and Kyeongha.
Member Changes and Continued Promotions (2017-2019)
In 2018, member Kyeongha left the group due to personal reasons. Despite this, TST continued their activities as a six-member group and released several singles, including “Love Story” and “Paradise”, which gained attention for their catchy melodies and emotional performances.
Tragic Loss and Final Activities (2020)
On June 16, 2020, the K-pop world mourned the loss of member Yohan (Kim Jeong Hwan), who passed away at the age of 28. His sudden passing deeply affected both the members and fans. After this heartbreaking event, the group became inactive, and their future remained uncertain.
Disbandment and Legacy
Though TST never officially announced their disbandment, they have not engaged in group activities since 2020. Their music, however, continues to be cherished by fans worldwide, and they are remembered for their passion and contributions to the K-pop industry.
#TST K-pop, Top Secret history, TST debut, TST disbandment
TST (Top Secret) Discography
Complete discography of TST (Top Secret), including albums, singles, and music videos.
Mini Album: “Time’s Up” (2017)
- Mind Control (주인공)
- Wake Up
- Find the Way
- Time’s Up
- Better Day
Single Album: “Wake Up” (2017)
- Wake Up
- Mind Control (Inst.)
- Wake Up (Inst.)
Single Album: “Love Story” (2018)
- Love Story
- Love Story (Inst.)
Single Album: “Paradise” (2018)
- Paradise
- Paradise (Inst.)
Single Album: “Countdown” (2020)
- Countdown
- Countdown (Inst.)
#TST K-pop, Top Secret albums, TST songs, TST discography, TST music
Interesting Facts About TST (Top Secret) | Trivia
List of Interesting facts about TST (Top Secret), the South Korean boy group.
- 1. TST originally debuted as Top Secret in 2017 before rebranding.
- 2. The group’s debut song “Mind Control” gained attention for its retro sound and powerful choreography.
- 3. Member Ain (Kim Jung Hoon) was the leader and known for his deep voice and strong leadership.
- 4. Yohan (Kim Jeong Hwan) was loved for his charisma and unfortunately passed away in 2020, shocking fans worldwide.
- 5. TST had a unique and colorful concept, mixing classic K-pop elements with a modern twist.
- 6. The group had international fans, despite being underrated in Korea.
- 7. Their song “Paradise” became a fan-favorite for its summery vibe and catchy melody.
- 8. The members often showed their close friendship through vlogs and social media interactions.
- 9. Kyeongha left the group in 2018, leaving TST with six members.
- 10. Despite facing many challenges, TST‘s music continues to be appreciated by fans worldwide.
TST (Top Secret) Social Media Accounts
List of official social media accounts of TST (Top Secret), the K-pop group.
#TST K-pop, Top Secret social media, TST Twitter, TST Instagram, TST YouTube
- Official Twitter: @TST_twt
- Official Instagram: @tst_official
- TST Official YouTube: (youtube.com/channel/UCXoTST_official)
- TST Official Facebook (facebook.com/TST.official” target=”_blank”>