Umineko no Naku Koro ni musicbox Blue is the first comprehensive collection of original soundtrack music for Umineko no Naku Koro Ni.
Tracklisting
Disc1
| 01 | Ride on | 3:10 |
| 02 | The Door of Summer | 1:57 |
| 03 | HANE | 1:40 |
| 04 | Sea | 0:48 |
| 05 | Towering Cloud in Summer | 1:52 |
| 06 | White Shadow | 1:29 |
| 07 | hope | 3:04 |
| 08 | mind | 1:02 |
| 09 | Core | 1:55 |
| 10 | Requiem | 2:52 |
| 11 | Oku | 1:53 |
| 12 | Untitled | 0:11 |
| 13 | Answer | 2:35 |
| 14 | moon | 2:58 |
| 15 | absolution | 2:06 |
| 16 | Heaven's Floor | 3:04 |
| 17 | Untitled | 0:11 |
| 18 | happiness of marionette (omake) | 2:02 |
| 19 | Sunny Place | 3:17 |
| 20 | Dancing Pipe | 4:07 |
| 21 | Dance of the Moon Rabbits | 2:37 |
| 22 | prison | 3:00 |
| 23 | mother | 2:23 |
| 24 | Melting Away | 3:03 |
| 25 | soul of soul | 2:18 |
| 26 | Thank You for Being Born | 3:13 |
| 27 | Paradise Lost | 4:01 |
| 28 | Wings | 2:50 |
| 29 | happiness of marionette | 2:21 |
| Total: | 67:59 |