[2][3] Hyojung was born on July 28, 1994, in Anyang, Gyeonggi Province, South Korea.

[5] In February 2017, she competed on King of Mask Singer under the name "Moon," appearing in episode 98.

[11] Hyojung participated in the OST for SBS' Hyena with "Today, Just Like Yesterday (오늘도 어제처럼)", released on March 21, 2020.

[12] On February 22, 2021, Hyojung was chosen by Walt Disney Company Korea to sing the Korean version of "Lead The Way" for Disney's animated film, Raya and the Last Dragon.

[13][14] All song credits are adapted from the Korea Music Copyright Association's database, unless otherwise noted.