Master4 – U Make Me Smile
Track 05 from EP "Synergy"
Release Date: 2013.03.21
Master4 – 그녀의 목소리
Track 04 from EP "Synergy"
Release Date: 2013.03.21
Master4 – 물 흐르는 대로
Track 02 from EP "Synergy"
Release Date: 2013.03.21
Master4 – 예의범절
Track 01 from EP "Synergy"
Release Date: 2013.03.21