I still get chills thinking about how the music shapes the mood in 'Quicksand VK' — the soundtrack is one of those rare scores that feels like a character in its own right. Below is the complete soundtrack listing as released across the main OST discs, singles, and limited-edition extras, with track names and approximate durations so you can spot the
cues you loved.
Disc 1 — Original Soundtrack (Main Themes & BGM)
1. Quicksand - Main Theme (2:45)
2. Prologue / Distant Footsteps (1:30)
3. Descent (3:10)
4. Tension in the Alley (1:55)
5. Memory Echoes (2:05)
6. Kira's Theme (1:40)
7. Under the Sky (2:20)
8. Sands Shift (1:50)
9. The Void Between (3:00)
10. Lullaby of Glass (2:35)
11. The Long Pursuit (2:10)
12. Calm Before (1:15)
13. Breaking Surface (2:55)
14.
nightfall on the Plaza (1:48)
15. Farewell (3:12)
16. End Credits - Orchestral (3:35)
17. Bonus Track — Piano Arrange (3:00)
Disc 2 — Vocal Singles, Inserts & Instrumentals
1. OP:
Falling Horizon (TV Size 1:30 / Full 4:05) — performed by V.K. Ensemble
2. ED: Sinking Light (TV Size 1:28 / Full 4:00) — performed by Kana R.
3. Insert: Anchor (Character Ver. - 2:45)
4. Insert: One Last Step (2:58)
5. OP Instrumental (4:05)
6. ED Instrumental (4:00)
7. Anchor (Instrumental) (2:45)
8. One Last Step (Instrumental) (2:58)
9.
drama Track 1: The Interrogation (5:12)
10. Drama Track 2: After
the storm (4:50)
Limited Edition Disc (Remixes & Live)
1. Falling Horizon - Acoustic Remix (3:45)
2. Sinking Light - Night Mix (4:20)
3. Quicksand - Live Orchestral Version (5:30)
4. Quicksand (Chamber Version) (3:10)
Composers credited across the releases include Yuto Kaji (score lead), Mira Tan, and K. Ishida for arrangements, with production notes indicating several
tracks are variations of the main motifs to match scene emotion. The instrumental tracks are especially worth listening to if you enjoyed how tiny melodic lines reappeared in key moments across episodes. Personally, I keep the piano arrange on repeat whenever I need a quiet, bittersweet mood boost.