is ABC as easy as 123? A sweet love story between Y/N and D.O Kyungsoo. Copyright for the music lyrics used are from EXO MAMA and XOXO album, the songs Angel, My Lady, Baby don't cry. Written by: J. Lewis Jarah Gibson DK Hyuk Shin Sasha Hamilton Composdd by: Hitchhiker (DJ Jinu) Ophelia and Xiumin lyrics written by Cho Yoon-kyung, Kim Tae-sung, Im Kwang-wook, Andrew Choi, Kalle Engstrom,