The title song of this mini album and EXO’s debut single, “MAMA”, is the work of the hit composer, Young-Jin Yoo, and the majestic sound of the Gregorian chant and the orchestra is amplifying the mysterious ambience of EXO-K and EXO-M and the sharp synth and guitar riff and powerful shouting at the dance break overwhelm the ears.

The lyric enhanced the perfection of the song further by reflecting the anxiety about the conflict and the absence of communication the contemporaries feel between the reality and the digital world and the hope for the recovery of the pure love.