Kim Hyung-soo, known professionally as Brother Su, was born on December 22,
1990, in South Korea and is a singer-songwriter and record producer. He
officially debuted in 2010 under RealCollabo with the single "It Was You" and
released his first full album Paper in July 2013. In 2015, Brother Su joined
Starship Entertainment. Notable collaborations include the soundtrack "You Don't
Know Me" for the MBC drama She Was Pretty. His work as a songwriter includes
BTS's "I Need U", which won first place in music programs, and Zion.T’s "Eat".