Artist: KARA Single: Bye Bye Happy Days! (Type C - all songs of the single) Genre: Pop Release date: March 27, 2013 Format: MP3 Bit-rate: 320k  **Tracklist** 01\. Bye Bye Happy Days! - **(PV [here](//www.nyaa.se/?page=view&tid=413783))** 02\. My Boy 03\. Bye Bye Happy Days! (Instrumental) 04\. My Boy (Instrumental) 05\. Beautiful Night \[Bonus Track\]