The song "POP!" is an upbeat, electronic pop track in which NAYEON urges a taken individual to break out of a current relationship and recognize how they truly feel about her. She plays up her own ability to make the person feel "popped" - a feeling of being excited, energized, and intoxicated by her affections towards him. The song is about self-empowerment, being confident in one's own feelings, and the capriciousness of love.
—SongTell