Brian Joo, better known professionally as Brian (Korean: 브라이언), is a Korean American singer and one-half of the R&B duo Fly to the Sky. His first solo album, The Brian was released in December 2006. His second solo album, Manifold was released in December 2009.

Fly to the Sky is a South Korean R&B duo consisting of Brian Joo and Hwanhee. Initially marketed as K-pop idols, the duo later developed a more mature image and became one of the most popular R&B groups in South Korea. The duo has released nine studio albums since its debut in 1999.