The "Special" edition of the soundtrack includes a vast array of instrumental tracks (BGM) that build the drama's intense psychological atmosphere. Composed by artists like , Park Yoon-seo , and Lee Joon-wha , these pieces are often characterized by their eerie, discordant, or suspenseful arrangements.
: A track that delves into the duality of identity and the facades maintained by the various suspects. Instrumental Score and Psychological Tension Various Artists Blind (Original Television So...
: Tracks like "An Old Wound" and "Lonely" offer rare moments of quiet sadness, grounding the thriller elements in the characters' personal pain. Narrative Cohesion The "Special" edition of the soundtrack includes a