외톨이 Original Motion Picture Soundtrack
| Composed by | Marco |
| Published by | 스카이 엔터테인먼트 |
| Release type | Film Score - Official Release |
| Format | 1 Digital - 23 tracks |
| Release date | September 12, 2008 |
| Duration | 00:47:32 |
| Genres |
| 1 | PrologueMarco | 01:41 |  |
| 2 | ?????Marco | 00:35 | |
| 3 | ?? ???Marco | 01:59 | |
| 4 | ??? ??Marco | 00:38 | |
| 5 | ??? ??Marco | 00:46 | |
| 6 | ???? ???Marco | 03:57 | |
| 7 | ?? ???Marco | 02:48 | |
| 8 | ?? ?? ? ????Marco | 02:44 | |
| 9 | ??? ??Marco | 02:35 | |
| 10 | ??? ??Marco | 01:09 | |
| 11 | ????? ??Marco | 01:02 | |
| 12 | ??? ??Marco | 02:16 | |
| 13 | ??Marco | 02:19 | |
| 14 | ???? ????Marco | 04:53 | |
| 15 | ?? (??)Marco | 01:00 | |
| 16 | ???? ???Marco | 00:56 | |
| 17 | ???Marco | 00:56 | |
| 18 | ??? ??Marco | 02:10 | |
| 19 | ??Marco | 01:57 | |
| 20 | ??? ??Marco | 02:37 | |
| 21 | ??Marco | 02:10 | |
| 22 | ???Marco | 01:51 | |
| 23 | ??Marco | 04:33 | |
