“O2” by SUHO is a dreamlike acoustic pop song from his debut EP, Self-Portrait (2020), symbolizing a love where two people with empty hearts become each other’s essential oxygen. It is characterized by a warm, romantic, and somewhat melancholic atmosphere, often associated with imagery of drifting in a deep blue sea.

Song Credits

  • Artist: Suho
  • Album: Self-Portrait
  • Released: March 30, 2020
  • Length: 3:49
  • Label: SM Entertainment
  • Lyricists: SH2O (Suho), Bryan Cho, Cliff Lin, Ryan Colt Levy
  • Composers: DJ HotBoyzZz (Cliff Lin, Ryan Colt Levy, Bryan Cho)

SUHO “O2” Live Session

SUHO “O2” Lyrics

SUHO “O2” Meaning

Suho – “O2” is a dreamy acoustic pop track from his solo debut EP Self-Portrait (2020), built around a gentle yet deeply emotional concept of love as survival.

At its core, “O2” uses oxygen as a metaphor for a person who becomes essential to your existence. The idea is simple but powerful: just as humans cannot live without oxygen, the narrator feels they cannot live emotionally without that one special person. It reflects a kind of love that brings comfort, completion, and meaning to an otherwise empty heart.

A defining element of the song is its water imagery. The sound and lyrics evoke the feeling of floating or drifting in a deep blue sea, creating a calm but slightly melancholic atmosphere. This imagery enhances the meaning suggesting a state of being lost or submerged, where the other person becomes the only source of air, guidance, and rescue.

Within the context of Self-Portrait, “O2” sets the tone for an album centered on introspection, emotion, and artistic expression. It introduces a softer, more vulnerable side of Suho, focusing on sentimental storytelling rather than grand performance.

Fans have also connected the song to EXO’s broader lore, interpreting it as a continuation of “water” symbolism a subtle narrative of longing to be found, saved, or understood in an emotional “ocean.”