Lee Sang-yeon (이상연; born November 4, 1996), known mononymously as Sangyeon (상연), is a South Korean singer-songwriter under IST Entertainment. He is the leader of the boy group THE BOYZ.
Known For:Acting
Birthday:1996-11-04
Place of Birth:Seoul, South Korea
Also Known As:Lee Sang-yeon, 이상연, THE BOYZ, 더보이즈, ลี ซังยอน, เดอะบอยซ์, ザボーイズ, イ・サンヨン