Bye Bye Happy Days! (Instrumental) Lyrics
| Song | Bye Bye Happy Days! (Instrumental) |
| Artist | Kara |
| Album | Bye Bye Happy Days! (初回限定盤B) |
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| Song | Bye Bye Happy Days! (Instrumental) |
| Artist | Kara |
| Album | Bye Bye Happy Days! (初回限定盤B) |