About Hyoyeon
Kim Hyo-yeon (Korean: 김효연; born September 22, 1989), known professionally as Hyoyeon or DJ Hyo, is a South Korean singer, dancer, rapper, and DJ. She debuted as a member of the girl group Girls' Generation in August 2007, which went on to become one of the best-selling artists in South Korea and one of the most widely known K-pop groups worldwide. She has since participated in other SM Entertainment projects, including Girls' Generation-Oh!GG and Got the Beat. Hyoyeon also released the solo singles "Mystery" (2016) and "Wannabe" (2017) prior to making her solo debut as Hyo with the single "Sober" in 2018. In South Korean television, Hyoyeon was a part of the main cast of the variety show Invincible Youth 2 (2011–2012), Attraction TV: Season 2 (2017), My English Puberty (2017–2018), Where Is Mr. Kim Season 2 (2018), Secret Unnie (2018), as the contestant of several competition show Dancing with the Stars: Season 2 (2012), Hit the Stage (2016), Good Girl (2020). Kim later had her own reality-show Hyoyeon's One Million Likes (2015) and Hyoyeon's 10 Million Likes (2016). In 2007, she teamed up with Jae Won for a dance collaboration to "Anonymous". In July 2007, before the official debut Girls' Generation had their first stage performance on Mnet's School of Rock, where the group performed their first single, "Into the New World" (다시 만난 세계; Dasi mannan segye).
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.