Album was composed by Chiyomaru Shikura / Takeshi Abo and was released on October 28, 2011. Soundtrack consists of 53 tracks tracks with duration over more than hour. Album was released by GigasDrop..
CD 1
| 1 | Sky-clad Observer [MEC PC-8081mk2SR Version] | 02:01 |  |
| 2 | Gate of steiner [MEC PC-8081mk2SR Version] | 01:28 | |
| 3 | Laboratory [MEC PC-8081mk2SR Version] | 02:06 | |
| 4 | Noisy times [MEC PC-8081mk2SR Version] | 01:12 | |
| 5 | Explanation [MEC PC-8081mk2SR Version] | 01:43 | |
| 6 | Solitude [MEC PC-8081mk2SR Version] | 01:49 | |
| 7 | Beginning of fight [MEC PC-8081mk2SR Version] | 01:02 | |
| 8 | The Limit [MEC PC-8081mk2SR Version] | 01:37 | |
| 9 | Crossroads [MEC PC-8081mk2SR Version] | 01:20 | |
| 10 | Walking on sleeping [MEC PC-8081mk2SR Version] | 01:41 | |
| 11 | Village [MEC PC-8081mk2SR Version] | 01:25 | |
| 12 | Precaution [MEC PC-8081mk2SR Version] | 01:55 | |
| 13 | Over the sky [MEC PC-8081mk2SR Version] | 01:11 | |
| 14 | Reunion [MEC PC-8081mk2SR Version] | 00:45 | |
| 15 | Easygoingness [MEC PC-8081mk2SR Version] | 01:03 | |
| 16 | OPERATION SKULD [MEC PC-8081mk2SR Version] | 02:02 | |
| 17 | Gate of steiner Ringing [MEC PC-8081mk2SR Version] | 00:56 | |
| 18 | Gate of steiner 2nd Edition ver1.02 [MEC PC-8081mk2SR Version] | 01:30 | |
| 19 | Sky-clad Observer [MEC PC-6010mk2 Version] | 02:00 | |
| 20 | Gate of steiner [MEC PC-6010mk2 Version] | 01:27 | |
| 21 | Laboratory [MEC PC-6010mk2 Version] | 02:06 | |
| 22 | Noisy times [MEC PC-6010mk2 Version] | 01:12 | |
| 23 | Explanation [MEC PC-6010mk2 Version] | 01:36 | |
| 24 | Solitude [MEC PC-6010mk2 Version] | 01:55 | |
| 25 | Beginning of fight [MEC PC-6010mk2 Version] | 01:01 | |
| 26 | The Limit [MEC PC-6010mk2 Version] | 01:22 | |
| 27 | Crossroads [MEC PC-6010mk2 Version] | 01:22 | |
| 28 | Walking on sleeping [MEC PC-6010mk2 Version] | 01:41 | |
| 29 | Village [MEC PC-6010mk2 Version] | 01:27 | |
| 30 | Precaution [MEC PC-6010mk2 Version] | 01:53 | |
| 31 | Over the sky [MEC PC-6010mk2 Version] | 01:10 | |
| 32 | Reunion [MEC PC-6010mk2 Version] | 00:44 | |
| 33 | Easygoingness [MEC PC-6010mk2 Version] | 01:01 | |
| 34 | OPERATION SKULD [MEC PC-6010mk2 Version] | 02:02 | |
| 35 | Gate of steiner Ringing [MEC PC-6010mk2 Version] | 00:58 | |
| 36 | Sky-clad Observer [MEC PC-8081mk2MH Version] | 02:01 | |
| 37 | Gate of steiner [MEC PC-8081mk2MH Version] | 01:27 | |
| 38 | Laboratory [MEC PC-8081mk2MH Version] | 02:01 | |
| 39 | Noisy times [MEC PC-8081mk2MH Version] | 01:12 | |
| 40 | Explanation [MEC PC-8081mk2MH Version] | 01:41 | |
| 41 | Solitude [MEC PC-8081mk2MH Version] | 01:49 | |
| 42 | Beginning of fight [MEC PC-8081mk2MH Version] | 00:59 | |
| 43 | The Limit [MEC PC-8081mk2MH Version] | 01:37 | |
| 44 | Crossroads [MEC PC-8081mk2MH Version] | 01:23 | |
| 45 | Walking on sleeping [MEC PC-8081mk2MH Version] | 01:40 | |
| 46 | Village [MEC PC-8081mk2MH Version] | 01:24 | |
| 47 | Precaution [MEC PC-8081mk2MH Version] | 01:49 | |
| 48 | Over the sky [MEC PC-8081mk2MH Version] | 01:06 | |
| 49 | Reunion [MEC PC-8081mk2MH Version] | 00:43 | |
| 50 | Easygoingness [MEC PC-8081mk2MH Version] | 01:04 | |
| 51 | OPERATION SKULD [MEC PC-8081mk2MH Version] | 02:00 | |
| 52 | Gate of steiner Ringing [MEC PC-8081mk2MH Version] | 00:56 | |
| 53 | Gate of steiner 2nd Edition ver1.02 [MEC PC-8081mk2MH Version] | 01:27 | |
