Appears on releases
| # | Title | Length | Track artist | Release title | Country/Date | ||||
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 1.1 | いつか | 5:17 | ゆず | いつか |
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| 1.7 | いつか | 5:17 | ゆず | ゆずえん |
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| 1.8 | いつか | 5:16 | ゆず | Home [1997～2000] |
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| 1.6 | いつか | 5:18 | ゆず | ゆずイロハ 1997-2017 |
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Relationships
| recording of: | いつか |
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Related works
いつか
| lyricist and composer: | 北川悠仁 |
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