Also known as Jae, he is a guitarist and vocalist from the K-pop band DAY6. He made his television debut in 2012 competing on the inaugural season of K-pop Star.
He attended California State University, Long Beach. Before joining DAY6, he would often post song covers to YouTube.
He took sixth on K-Pop Star and scored a contract with JYP Entertainment.
Born in Buenos Aires, Argentina, he grew up in Long Beach, California, eventually settling in South Korea.
He makes up one-fifth of DAY6 alongside Yoon Do-woon, Kang Yeong-hyun, Kim Won-pil, and Park Sungjin.