Pre-debut Prior to her debut, Sojin worked as a vocal trainer for the K-pop boy band
Ulala Session.
2010–2012: Debut, Flames of Desire OST and songwriting On July 7, 2010, Sojin debuted as a member of
Girl's Day on
KBS'
Music Bank with their debut single, "Tilt My Head" (). On January 9, 2011, Sojin released her first solo single for the
Flames of Desire OST, "Our Love Like This". On April 19, 2012, Girl's Day made a comeback with the mini album
Everyday II. The album included the song "Telepathy", which was composed by Sojin. On the same year, Sojin and a male composer wrote the song "It's Snowing" for Tokyo Girl. The song was later released on December 7.
2013–2016: Collaborations and Family Outing OST On March 14, 2013, Girl's Day released the full-length album
Expectation. Sojin wrote the intro song "Girl's Day World", and co-wrote the lyrics for "I Don't Mind" with her fellow members. On October 15, Girl's Day released the song "Let's Go", written and composed by Sojin. On March 2, 2014, Sojin collaborated with hip hop artist
Crucial Star on a remake of Park Hye-kyung's song "Three Things I Want to Give You". On January 30, 2015, Sojin lent her voice for "Dizzy Dizzy" for Part 2 of her
SBS' weekend drama
Family Outing OST.
2017–present: Acting career On June 24, 2020, So-jin has confirmed her appearance in MBC's 'The Spies Who Loved Me', which will be aired in October. On June 23, 2021, So-jin cast as the drama
Alchemy of Souls. On September 15, 2021, So-jin cast as the main in
Sh**ting Stars. On June 17, 2022, So-jin cast as the one act-drama ''
Don't Announce Your Husband's Death'' as role Yoo Young-joo. ==Personal life==