[4][5][6][7] He rose to fame and gained popularity in 1995 with the breakout hit "Holding Onto the End of the Night" (Korean: 이밤의 끝을 잡고), from Solid's second album The Magic of 8 Ball (1995).

[10][11] Lee, with two other members of Solid, was at the forefront of bringing the American hip-hop sound to South Korean audience and played a pivotal role establishing the genre during a time when ballad and dance music were prevalent.

[18] Not only their families vacationed together frequently, they attended the same Korean American church in Fountain Valley, Ca, where they participated in musical activities during their formative years.

[25] Lee attended Edison High School, Huntington Beach, Ca, and got his bachelor's degree from University of Southern California in 1999.

[28][29] After noticing their complementary set of skills, then L.A. Boyz manager pursued them to be a boy band to debut in Taiwan adding a fourth member who was fluent in Chinese.

[30][32] Under the condition that he would eventually come back to finish his undergraduate degree, Lee's parents granted him a permission to pursue music career in Korea.

[36] One of many feats that made the Solid's breakout hit "Holding the End of the Night" (Korean: 이밤의 끝을 잡고), The Magic of 8 Ball (1995), striking and great was Lee's irreplaceable bass toned narration interludes; Lee also demonstrated his vocal ability to harmonize and that there were more facets to his voice than being a rapper.

[24] In an interview during the promotion of "Holding the End of the Night" (Korean: 이밤의 끝을 잡고), Lee stated that he never imagined himself being part of a musical act performing on stage.

[4] Putting behind the whirlwind days of Solid, Lee went back to being a student at University of Southern California, in July 1997, in the midst of speculations to why the group came to a halt at the height of their career.

[52][53][54] In December 2006, Lee recorded a single with a fellow member of Solid, Jaeyoon Chong for a newly formed R&B/Hip-hop group, Soul-Town.

[60] His music career became dormant since the birth of his first child around the end of the 2000s as his priorities veered towards family and real estate business.

[64] Only hesitation that held him back from the comeback was the fear of not meeting the expectations of the fans who remembered Solid from the '90s, however, he decided to proceed for the love of making music was greater.

[67] During early promotion of Into the Light, Lee repeatedly expressed the awkwardness of getting back the celebrity status for his life has long been away from the spotlight.

[77][14] May 18 through 20th, 2018, the trio started the second tour of their career, Into the Light, with packed audiences at Blue Square iMarket Hall in Seoul, Korea,[78] in which Lee performed with an elite Canadian beatboxer KRNFX playing his turntable set.