Devil Connection's soundtrack radiates the cheerful, quirky energy of a demon-summoning game that doesn't take itself too seriously. The title track Devil Connection and Demonic Summoning! establish the playful supernatural vibe right away, while Theme of Debirun gives the little devil protagonist a catchy, endearing musical identity.
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The recurring Through the Crystal motif — appearing across Day 0, Day 1, Day 2, and Day 3 — provides a structural backbone that marks the passage of time through the story. The gameplay-adjacent tracks are loaded with personality.
Connection★Communication and Connection Complete! capture the satisfaction of the game's core summoning mechanic, while MP Recovery Failed... and MP Recovery 100% turn resource management moments into musical events with contrasting moods of frustration and triumph.
Evil Eye Search! and Devil Eye Search! play on each other as mirrored variations, and Debiru Tentekomai has the kind of frantic, comedic energy its name suggests — devils running around in a panic. The album's emotional depth sneaks up on you in the later tracks.
Angel of Sorrow introduces genuine pathos, and Resolve signals the turn toward the climactic confrontation. Advent of the Demon Lord and SUPERNOVA escalate the stakes dramatically, while The Universe Smells of Raspberries is the kind of wonderfully absurd track title that tells you this game has a sense of humor even in its cosmic moments.
Theme of Cpyadoel and Cpyadagya Theater flesh out the supporting cast with distinctive themes of their own.