Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.5 | 모르는 척 | 3:54 | 4minute | Heart to Heart | 4minute | EP |
| ||
| 1.5 | Pretending Not To Know | 3:54 | 4Minute | Heart To Heart | 4Minute | EP |
| CUBE Entertainment (Korea) | |
| 1.5 | 모르는척 | 3:52 | 4minute | 4minutes Left | 4minute | Album |
| Far Eastern Tribe Records | |
| 1.5 | Pretending Not to Know | 3:54 | 4minute | 4minutes Left | 4minute | Album |
| CUBE Entertainment (Korea) | |
| 1.5 | 모르는척 | 3:52 | 4minute | 4MINUTES LEFT | 4minute | Album |
| CUBE Entertainment (Korea) | DK-0610 |
| 1.5 | 모르는척 | 3:52 | 4minute | 4MINUTES LEFT | 4minute | Album |
| CUBE Entertainment (Korea) | |
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