Kim Hyo-yeon (born September 22, 1989), referred to as Hyoyeon or DJ HYO, is a South Korean singer, DJ, and television personality. She debuted as a member of the girl group Girls' Generation (and later its subgroup Girls' Generation-Oh!GG) in August 2007, which went on to become one of the best-selling artists in South Korea and one of South Korea's most popular girl groups worldwide. Since 2016, she has also released singles as a solo artist.
Hyoyeon was born in Incheon, South Korea on September 22, 1989. She grew up with her parents and her younger brother, Kim Min-gu. Hyoyeon's formal dance training started in elementary school. At her neighborhood's small hip-hop school, she learned hip hop, jazz and Latin dance. In 1999, she enrolled in Winners Dance School, a famous dance school in South Korea specializing in popping, locking, animation and various other hip-hop styles. At the school she met Miss A's Min, with whom she formed the dance team Little Winners (리틀위너스). The duo performed at various showcases and was spotlighted by HipHoper.com in 2004.