Hyuk Shin (Hangul: 신혁; born June 5, 1985) is a music producer, composer, and singer-songwriter from Seoul, South Korea. His team, A-Rex created a song, "One Less Lonely Girl" by Justin Bieber in 2009. He has worked with many major artist in K-pop music industry, including Exo, Shinee, Girls' Generation, Teen Top, and many more.