| vocals |
|---|
| Dark Circle | | Humming Urban Stereo | 1:31 |
| Delight Disco | lead vocals | Humming Urban Stereo | 4:36 |
| Hello Stranger | | Humming Urban Stereo | 5:39 |
| Jina (Humming Girl) | lead vocals | Humming Urban Stereo with Shina-E' & Brown Bunny | 3:24 |
| Lie | background vocals [chorus] | Instant Romantic Floor | 3:05 |
| Lounge People | background vocals [chorus] and lead vocals | Humming Urban Stereo | 4:48 |
| Rainbow | guest and lead vocals | Humming Urban Stereo feat. Shina-E", YeSLow & Brown Bunny | 4:06 |
| Salsa Woman | lead vocals | Humming Urban Stereo | 4:38 |
| Scully Doesn't Know | background vocals [chorus] and lead vocals | Humming Urban Stereo | 4:07 |
| Scully Doesn't Know (Korean ver.) | background vocals [chorus] and lead vocals | Humming Urban Stereo | 4:02 |
| Simple Life | lead vocals | Humming Urban Stereo | 3:32 |
| Stalker | lead vocals | Humming Urban Stereo | 3:47 |
| Very Very Nice | background vocals [chorus] and lead vocals | Humming Urban Stereo | 1:16 |
| XXXX | | Humming Urban Stereo | 3:31 |
| XXXX | lead vocals | Humming Urban Stereo | 3:31 |
| 지랄 | lead vocals | Humming Urban Stereo | 3:22 |
| 지랄 | guest and lead vocals | Humming Urban Stereo feat. Shina-E" | 3:42 |
| vocals arranged |
|---|
| Lie | background vocals [chorus] | Instant Romantic Floor | 3:05 |
