KOREAN T-ARA (티아라) T-ARA – Day by Day (OT6 VER.) Day by Day (OT6 Ver.) Day By Day 2012.07.03 Boram, Qri, Soyeon, Eunjung, Hyomin, Jiyeon Lyrics/작사: 안영민 Composer/작곡: 김태현, 조영수 Arranger/편곡: ???