Jo Seong-hyeon (Korean: 조성현; born July 5, 1983) better known as by his stage name Eru (Hangul: 이루), is an American-born South Korean singer and actor based in South Korea. His stage name Eru has the meaning that he would accomplish his dreams as a musician. Its also a name that is made from Lee (李) which is the surname of his mother and lu (鏤), which means to inscribe his name on something.He is known as "Indonesia's Prince," given his popularity in that country.