4WD – 오늘만큼은 헤어져야 돼 (Duet With 문빈 Of Pascol)
Track 03 from EP "The Sign Of 4"
Release Date: 2013.07.03
4WD – 너의 바람이 내 코끝에 맴돌 때 (Feat. 이세준 Of 유리상자)
Track 02 from EP "The Sign Of 4"
Release Date: 2013.07.03
4WD – 4개의 서명 (Feat. Paloalto, MC Meta, DJ Wreckx)
Track 01 from EP "The Sign Of 4"
Release Date: 2013.07.03
4WD – 8시 (Feat. 리누, 키지)
Track 01 from Single "8시"
Release Date: 2017.06.30