Appears on releases
| # | Title | Length | Track artist | Release title | Country/Date | ||||
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 3.8 | 楽園 | ?:?? | 平井堅 | Ken Hirai 10th Anniversary Complete Single Collection ’95–’05 “歌バカ” (初回生産限定盤) |
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| 3.8 | 楽園 | ?:?? | 平井堅 | Ken Hirai 10th Anniversary Complete Single Collection ’95–’05 “歌バカ” |
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