e.So was a member of the girl group 'Berry Good' and was a lead vocalist in the group with good voice and power. Currently, she continues her various musical activities as a solo singer. She appeared in Voice Korea's spin-off Voice Kids in 2013 and was one of the top three, and was active as a member of 'Berry Good' from 2015 to 2021. Starting with her single album "Orgel" in July 2021, e.So has established herself as a solo artist with the release of "Black Ocean" and "Dope," and with her new single "Numb," she plans to further expand his diverse musical spectrum.