Soyeon wanted to be an idol after watching Big Bang perform. She auditioned for many agencies, but was rejected because of her height or her musical direction. She finally joined Cube Entertainment in 2014, after impressing them with her rap skills. She gained attention for competing in the shows Produce 101 and Unpretty Rapstar in 2016, where she showcased her rap, vocal, and performance abilities, as well as her charisma and leadership. She made her solo debut in 2017 with the single “Jelly”, and re-debuted as the leader of G Idle Soyeon in 2018.