▁prom ot ional ▁tracks ▁of ▁the ▁album . ▁▁▁ ▁sign ifies ▁a ▁producer ▁that ▁has ▁multiple ▁song ▁cred its ▁for ▁the ▁album . ▁▁ ▁sign ifies ▁a ▁composer ▁who ▁is ▁also ▁the ▁arr anger . ▁ ▁In ▁popular ▁culture ▁In ▁ 2 0 0 5 , ▁" An ▁Ord inary ▁Day " ▁( 보 통 날 ) ▁and ▁" Prom ise " ▁( 약 속 ) ▁were ▁chosen ▁as ▁default ▁t unes ▁installed ▁in ▁L G ▁Cy on ' s ▁ 3 4 0 ▁series ▁cell ular ▁ph ones . ▁ ▁" An ▁Ord inary ▁Day " ▁was ▁chosen ▁by ▁the ▁g . o . d ▁members ▁as ▁the ▁song ▁to ▁be ▁re made ▁for ▁their ▁ 2 0 1 4 ▁re union ▁album ▁Chapter ▁ 8 . ▁Original ▁composer ▁K won ▁T ae - e un ▁re arr anged ▁the ▁song ▁and ▁added ▁a ▁part ▁for ▁Y oon ▁K ye - s ang . ▁ ▁In ▁ 2 0 1 4 ▁Hy un A ' s ▁new ▁song ▁" From ▁When ▁and ▁Until ▁When " ▁( 어 디 부 터 ▁ 어 디 까 지 ), ▁which ▁she ▁co - w rote ▁with ▁label mate ▁Hy uns ik ▁of ▁B to B , ▁attract ed ▁attention ▁and ▁some ▁controvers y ▁when ▁listen ers ▁realized ▁that ▁several ▁lines ▁were ▁exactly ▁the ▁same ▁as ▁the ▁lyr ics ▁of ▁the ▁song ▁" The ▁Re ason ▁Why ▁O pp os ites ▁Att ract " ▁( 반 대 가 ▁ 끌 리 는 ▁ 이 유 ).