[4] After making her debut in 2014 with the EP Heize, she gained attention after appearing on the second season of South Korean reality show Unpretty Rapstar.

[6][7] Heize took part in Mnet's reality rap show Unpretty Rapstar but was eliminated in the semi-finals.

[8][9] Heize released her second EP And July in 2016, and it eventually peaked at 34 at the Gaon Music Chart.

The album contains 11 songs and features appearances from Simon Dominic, Colde, Sunwoo Jung-a, Jooyoung, Nafla and DAVII.

"[14] On July 7, 2019, Heize released the single "We Don't Talk Together" featuring Korean rapper Giriboy.

[17] On September 16, 2020, it was announced that Heize signed with P Nation, an entertainment company founded by Psy.