A lone shakuhachi cutting through silence, then this massive orchestral swell that has absolutely no business coming out of a mobile game. Shigeru Umebayashi's first Onmyoji soundtrack set the bar so high that the series has been chasing it ever since.
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"Seimei no Theme: Tooi Kioku" (Distant Memories) layers melancholy strings over traditional instruments in a way that makes the onmyoji's backstory feel ancient and personal. "Ikusa: Oni no Uta" (Battle: Song of Demons) drives with thundering taiko and aggressive string passages that turn turn-based combat into something cinematic.
"Sayonara" is pure heartbreak, just voice and sparse accompaniment trailing off. Forty-eight tracks covering everything from festival warmth to Yamata no Orochi's menace. If you've ever dismissed a gacha game's music, this soundtrack will make you reconsider that position entirely.