Cory Hong, also known by his Korean name Hong Joo Hyun and professionally as Corbyn, is a South Korean-American singer, dancer, composer, producer, and former member of 24K (투포케이). He was born in Lake Oswego, Oregon and moved back to South Korea as a child before returning to the United States at the age of 4 where he will remain until he graduated from college.

He made his debut in June 2012 as part of the acoustic pop sub-unit 4K, which was launched by the agency prior to the full group's debut. They released the single album "Rocking Girl".

He then made his debut in September 2012 as 24K's leader and main vocalist with their first mini-album, "Hurry Up". The group, managed by Choeun Entertainment (조은엔터테인먼트), was never able to find a steady fanbase and opportunities to promote, often spending several years on hiatus before releasing new material. Plus, the agency began making constant lineup changes starting in 2014. He was one of the group's original members and produced 24K's mini-album "Super Fly" in its entirety, making it the first ever album in K-Pop made by just one person.

In January 2019, it was announced that he was leaving the group to focus on a career as a producer and occasionally singing. The following month, he made his solo debut with the single "M$D (Million Dollar Dream)" and changed his stage name from Cory to Corbyn.

He is currently an executive producer of 28 Laboratory Music.

(Source: kisskh) Edit Biography