Appears on releases
| # | Title | Length | Track Artist | Release Title | Release Artist | Release Group Type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.8 | 불안하다 | ?:?? | 2AM | Saint o'clock | 2AM | Album |
| BigHit Entertainment (imprint), JYP Entertainment | L100004170 |
| 1.8 | Nervousness | 3:56 | 2AM | Saint o'clock | 2AM | Album |
| BigHit Entertainment (imprint), JYP Entertainment | |
| 1.8 | 불안하다 | ?:?? | 2AM | Saint o'clock | 2AM | Album |
| BigHit Entertainment (imprint), JYP Entertainment | |
| 1.8 | 불안하다 | 3:56 | 2AM | Saint o'clock (Special Limited Edition) | 2AM | Album |
| BigHit Entertainment (imprint), JYP Entertainment | L100004177 |
| 1.8 | 불안하다 Nervousness | 3:57 | 2AM | Saint o'Clock (Special Edition) | 2AM | Album |
| Universal Music Taiwan | |