"12월" single 12월에 모든 꿈들이 이루어지기를 이 노래로 응원해요! Merry Christmas and Happy New Year!. Credits: Lyrics by Sein Kwon, 김연수 Composed by Sein Kwon, Jamieh, 김연수 Arranged by Jamieh, Supersu Vocal by Sein Kwon Piano by Supersu Bass by Jamieh, Supersu Synth by Jamieh Drums by Jamieh Mixed by Jamieh Recorded at Studio1950 Mastered by 권남우 @821 Sound Mastering A&R 신선영