이온 (ion) – never give up
Track 01 from Single "극복프로젝트1-3"
Release Date: 2021.02.02
이온 (ion) – 버텨 (endure)
Track 01 from Single "극복프로젝트1-2"
Release Date: 2021.01.15
이온 (ion) – 말도안돼! (oh my god freestyle)
Track 01 from Single "극복프로젝트1-1"
Release Date: 2020.12.22