천일의 약속 Original Soundtrack, Pt. 3 - Single
| Composed by | Sung Si Kyung |
| Published by | 예인문화 |
| Release type | Film Score - Official Release |
| Format | 1 Digital - 2 tracks |
| Release date | November 15, 2011 |
| Duration | 00:07:44 |
| Genres |
| 1 | 한번의 사랑Sung Si Kyung | 03:52 | |
| 2 | 한번의 사랑 (Instrumental)Sung Si Kyung | 03:52 |
