Appears on releases
| # | Title | Length | Track artist | Release title | Release artist | Release group type | Country/Date | Label | Catalog# |
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 2.1 | 거울아 거울아 (Korean version) ～鏡よ、鏡よ～ (music video) | ?:?? | 4Minute | HEART TO HEART (初回限定盤B) | 4Minute | Single |
| Far Eastern Tribe Records | UMCF-9590 |
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