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.
In 1998, he belonged to the fusion jazz band Wave.
In 2000, he belonged to the Wave again, where he played electric guitar.
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.Kim Young Suk (ko, known as Z-RAM, Kim Yeong-seok in N.EX.T), is their producer.
He participated in other albums and concerts by Hong Kyung Min and Lee Sun Hee as guitar sessions.
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.
He was a lecturer at the Rock Artist Club (Music School) from 1992 to 1993.
On November 2011, it was revealed that Lee Sang Soon is in a relationship with singer Lee Hyori.
He married Lee Hyori, on September 1, 2013 at their vacation home on Mt. Halla in Jeju Island.
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.
In 2020, he has also signed an exclusive contract with ESteem, which was his wife Lee Hyori has joined the agency.
"Monthly Project 2011 February Yoon Jong Shin" (with Yoon Jong Shin) (2011)