Go Young Heun is a South Korean singer, dancer and former member of STELLAR, RANIA and BLACKSWAN. She graduated from Hanlim Entertainment Arts High School and later enrolled in the Applied Music program at Baekseok University of Arts but is currently on a leave-of-absence.

Before debuting. she spent 5 years as a trainee at The Entertainment Pascal and before that, she auditioned for Keyeast Entertainment but failed. In 2016, she was part of a pre-debut girl group called LHEA under SS Entertainment and even joined Arirang TV's "S.O.S." to promote their 1st single album, "Starry Night", but the group never debuted.

She finally debuted the following year when she joined the group STELLAR as the vocalist and maknae. The group debuted in 2011 but underwent many lineup changes and she was added to the group along with other new members. Unfortunately, the group disbanded in 2018.

In 2019, she became the leader, lead vocalist and lead dancer of the group RANIA that had also debuted in 2011 but also underwent several lineup changes and never had a major success. In early 2020, the group was re-branded as BLACKSWAN and she re-debuted for the 3rd time with their 1st album "Goodbye Rania". However, despite being the first truly global idol group with members from different continents, they underwent many lineup changes not even one month after debuting.

On July 31, 2022, DR Music announced that she and fellow member Judy would be leaving the group in order to “fulfill their new dreams", which were never clarified.

(Source: Korean = Namu Wiki || Translation = MyDramaList) Edit Biography