The EP is composed of seven songs: three new songs, three already-released songs, and an instrumental. "2MYX" was written by Cha Yong-un and Yi Sin-seong and composed by John Lundvik, Andreas Oberg and Kalle Engstrom. "Catch Me If You Can" was written by Koh Minae and composed by Steven Lee and Jimmy Richard Drew. Steven Lee also produced the songs "Your Song", "One 4 U", and "Never Let Go" and composed "Hot Game", which was written by Kim Ji-hyang. An instrumental of "2MYX" was also included on the EP.