Bubble Pop!
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Disc1
| 1 | Attention | HyunA | 1:26 |
| 2 | Bubble Pop! | HyunA | 3:32 |
| 3 | Downtown | HyunA feat. Jeon Jiyoon | 3:23 |
| 4 | A Bitter Day | HyunA feat. Jun Hyung Yong & G.NA | 3:47 |
| 5 | Just Follow | HyunA feat. Dok2 | 3:25 |
| 1 | Attention | HyunA | 1:26 |
| 2 | Bubble Pop! | HyunA | 3:32 |
| 3 | Downtown | HyunA feat. Jeon Jiyoon | 3:23 |
| 4 | A Bitter Day | HyunA feat. Jun Hyung Yong & G.NA | 3:47 |
| 5 | Just Follow | HyunA feat. Dok2 | 3:25 |