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Lee Sang Soon (이상순; also spelled as Yi Sang Sun) is a South Korean guitarist, singer-songwriter, DJ, and composer under ESteem. He was a member of a modern rock band Baby Blue. In 1999, he became a member of the band Roller Coaster.



In 1997, he was a session member of a rock band Biscuit and in 1998, he was a live session member of the band Bank.[2]


In 1998, he belonged to the fusion jazz band Wave.[3]

In 2000, he belonged to the Wave again, where he played electric guitar.[4]

Baby Blue

In September 1998, along with Hwang Sun Young and Lee Hye Min, he belonged to the modern rock band Baby Blue, where he played guitar.[5] Kim Young Suk (ko, known as Z-RAM, Kim Yeong-seok in N.EX.T), is their producer.[6]

On September 18, 1998, they appeared in the Love on the Air.[7]

He appeared in the past video with Lee Hye Min and Hwang Sun Young when Sang Soon mentioned the Baby Blue in the chapter 41 of the Hangout with Yoo (How Do You Play?) on May 9, 2020.[8][9] This video came out again on January 8, 2021, in the 42nd episode of 20th Century Hit Song.[10][11]

The group wasn't popular, so people are mistaken for his debut as Roller Coaster. For example.[1] About his debut, on May 9, 2020, it was later revealed in Hangout with Yoo.[12][13]

Roller Coaster

In March, 1999, he formed Roller Coaster with Jinu and Jo Won Sun.[1]

Verandah Project

In 2010, he and Kim Dong Ryul created a project group, the Verandah Project. Since it is a project group, it has only been active in 2010.[14]


He participated in other albums and concerts by Hong Kyung Min and Lee Sun Hee as guitar sessions.[2]

The "To You" was composed by him with the lyrics written by Yoona. It was inspired by Yoona's time as a homestay employee at Hyori's home on Jeju Island for the JTBC show Hyori's Homestay 2.[15]

Personal life

He was a lecturer at the Rock Artist Club (Music School) from 1992 to 1993.[2][1]


On November 2011, it was revealed that Lee Sang Soon is in a relationship with singer Lee Hyori.[16]

He married Lee Hyori, on September 1, 2013 at their vacation home on Mt. Halla in Jeju Island.[17]

Lee Hyori's 2017 and 2018 shows "Hyori's Homestay" and "Hyori's Homestay 2" were beloved by many viewers. Currently, Lee Hyori is living a happily married life with him, with the couple going back and forth between residences in Gyeonggi province and Jeju island.[18]

In 2020, he has also signed an exclusive contract with ESteem, which was his wife Lee Hyori has joined the agency.[19]


Digital singles

  • "Again" (2018)


  • "Monthly Project 2011 February Yoon Jong Shin" (with Yoon Jong Shin) (2011)
  • "What's Wrong?" (with Oh Ji Eun) (2011)
  • "3rd Unexpected Meeting with Yang Hee Eun" (with Yang Hee Eun) (2015)
  • "To You" (with Yoona) (2018)



  • The Heaven is Only Open to the Single OST (2012)

Other releases


  • The Winter of the Year was Warm (2012) - Joon-Young
  • Grape Candy (2012) - Radio DJ (voice)
  • The Heaven is Only Open to the Single! (2012) - Sang-Soon

Reality shows

Variety shows

  • New Festa (JTBC, 2022) - regular


  • His hobbies are word games, reading comic books, watching videos, shooting, and photography.[1]
  • Kim Young Suk once contacted Twitter with Lee Sang Soon, and Hwang Sun Young who was after he retired from the show business.[20]


  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Rollercoaster. KBS World Radio (April 3, 2006).
  2. 2.0 2.1 2.2 이상순[기타] (Korean). ManiaDB.
  3. [10LINE 이효리] (Korean). Hankyung.
  4. 웨이브(WAVE) 2집, ZIZZY, 2000 (Korean). Korean Jazz Database.
  5. 베이비 블루 Baby Blue (Korean). ManiaDB.
  6. [새음반]보이존 '웨어 위 빌롱' 外 (Korean). JoongAng Ilbo.
  7. 과거 TV는 사랑을 싣고에 나온 안정환 첫사랑 찾기 ㅋㅋㅋㅋㅋㅋㅋ (Korean). Facebook (June 25, 2020).
  8. [놀면 뭐하니?]아내 이효리에게도 숨겨 두었던 화려한 과거...! 베이비 블루?! 20200509 (Korean). YouTube (May 9, 2020).
  9. 이효리 남편 이상순 “롤러코스터 전 혼성밴드 데뷔, 베이비블루”놀면 뭐하니?[결정적장면] (Korean). Newsen.
  10. '형이 왜 거기서 나와..?' 추억의 향기가 물씬 풍기는 롤러코스터🌸 [이십세기 힛-트쏭]│KBS JOY 210108 방송 (Korean). YouTube (January 24, 2021).
  11. ‘이십세기 힛-트쏭’ 이효리 남편 이상순, 롤러코스터로 ‘TV사랑’ 등장?…‘유스케’ 리디아리·소금·니브 外 다채로운 무대 [어제픽] (Korean). Top Star News (January 9, 2021).
  12. YouTube: MBCentertainment |[놀면 뭐하니?]아내 이효리에게도 숨겨 두었던 화려한 과거...! 베이비 블루?! 20200509
  13. 이효리 남편 이상순 “롤러코스터 전 혼성밴드 데뷔, 베이비블루”놀면 뭐하니?[결정적장면] (Korean). Newsen.
  14. The Korea Times: Lee Hyo-ri dating Lee Sang-soon
  15. Soompi: Girls' Generation's YoonA Glows In The Sunlight In Teaser For "To You" MV
  16. Soompi: More Details About Lee Hyori and Lee Sang Soon’s Relationship
  17. The Korea Herald: Lee Hyori releases wedding photographs
  18. Soompi: Lee Hyori And JTBC In Talks To Launch New Variety Show
  19. Soompi: Lee Sang Soon Joins Wife Lee Hyori By Signing With ESteem Entertainment
  20. @sethshinsungwoo @EsWhy76 @leesangsoon @dance1104 @patra102 @devin_ii @sunGYechoi @roseme75 @caby1925 돌아가신 아버님기일과 생일이같자축파티는못하지만감사드림다요~ (Korean). Twitter (March 15, 2011).

Official links