Lee Sang Yeon is a South Korean singer, dancer, and member of THE BOYZ (더보이즈). He graduated from Hanlim Entertainment Arts High School and, before debuting, spent time as a trainee at MBK Entertainment. He also appeared in Ailee's MV for "If You".

He made his debut in December 2017 as the group's leader and main vocalist with their first EP, "The First". They were managed by Cre.Ker Entertainment (크래커엔터테인먼트). They were able to win rookie awards in 2018 from the Korea Brand Awards, the Soribada Best K-Music Awards and the Melon Music Awards, all of which allowed them to gain a steady international fanbase.

In November 2019, they debuted in Japan with the release of their EP, "Tattoo". Then, in May 2020, the group entered Mnet's reality competition "Road to Kingdom", ending in 1st place and earning more commercial success and even winning Artist of the Year at the 2021 The Fact Music Awards.

In September 2021, their agency merged with PlayM Entertainment and became IST Entertainment (IST엔터테인먼트). In early 2025, they moved to One Hundred Label (원헌드레드레이블). He enlisted for his mandatory military service on March 17, 2025, and was discharged on September 16, 2026.

While serving, all members (except New) notified the agency of their intent to terminate their contracts due to breach of trust and filed for an injunction to suspend their validity. In April 2026, the court granted the injunction suspending the exclusive contracts with One Hundred. Then, in August, the 9 remaining members announced that each would sign separate contracts with agencies for solo projects but would continue to promote as a group.

(Source: kisskh) Edit Biography