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Disc1
| 1 | RBB (Really Bad Boy) | Red Velvet | 3:08 |
| 2 | Butterflies | Red Velvet | 3:29 |
| 3 | So Good | Red Velvet | 3:26 |
| 4 | 멋있게 (Sassy Me) | Red Velvet | 3:06 |
| 5 | Taste | Red Velvet | 3:04 |
| 6 | RBB (Really Bad Boy) (English ver.) | Red Velvet | 3:06 |
| 1 | RBB (Really Bad Boy) | Red Velvet | 3:08 |
| 2 | Butterflies | Red Velvet | 3:29 |
| 3 | So Good | Red Velvet | 3:26 |
| 4 | 멋있게 (Sassy Me) | Red Velvet | 3:06 |
| 5 | Taste | Red Velvet | 3:04 |
| 6 | RBB (Really Bad Boy) (English ver.) | Red Velvet | 3:06 |