Forbidden Siren Unofficial OST
AlbumTracklist 121:27
Digital Media 1
| 1 | With Broken Notes, the Siren Begins 冷水ひとみ & John Anthony Mathewson | 4:43 | |
| 2 | Mysteries Within the Mist | 5:15 | |
| 3 | The Presence of Hiruko | 5:22 | |
| 4 | The Village Under Darkness of Night | 5:16 | |
| 5 | Abandoned Structures Nestled Within the Forest | 5:31 | |
| 6 | Cowering From Sight, As the Evil Approaches | 4:16 | |
| 7 | Ancient Mysteries of Those Who Came Before | 5:25 | |
| 8 | Prayer to Datatsushi | 5:37 | |
| 9 | Shibito, the Souless Ones | 6:11 | |
| 10 | The Mana God’s Scream, Deep in the Night | 5:40 | |
| 11 | The Macabre Vanity of Mihama | 11:57 |
Digital Media 2
| 1 | Advent of Angels | 5:37 | |
| 2 | Old Stone Paths & Ancient Graves | 6:04 | |
| 3 | Perfect World of the Undead | 5:29 | |
| 4 | Warding Off Sickness & Evil Spirits | 5:25 | |
| 5 | Skulking and Lonesome | 5:53 | |
| 6 | Epiphylum Noxypetalum | 5:31 | |
| 7 | Sombre | 5:38 | |
| 8 | Sorrowful Pity of Maeda | 5:50 | |
| 9 | The Tsuchinoko's Will | 5:27 | |
| 10 | Hoshingoeika 冷水ひとみ & 柚楽弥衣 | 2:14 | |
| 11 | The Buster - 33 People Massacred - 朝倉紀行 | 3:06 |