Bye Bye Happy Days!
| "Bye Bye Happy Days!" | ||||
|---|---|---|---|---|
Regular edition cover | ||||
| Single by Kara | ||||
| from the album Fantastic Girls | ||||
| B-side |
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| Released | March 27, 2013 | |||
| Genre | Pop, dance-pop | |||
| Length | 4:36 | |||
| Label | Universal Sigma | |||
| Songwriter(s) | Simon Isogai, Kim Won-hyun | |||
| Producer(s) | Simon Isogai, Kim Won-hyun | |||
| Kara Japanese singles chronology | ||||
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"Bye Bye Happy Days!" (バイバイ ハッピーデイズ!, Baibai Happīdeizu!) is the eighth Japanese single by South Korean girl group Kara. It was released on March 27, 2013.