앨범 정보
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- Happy Days (Standard Edition)
- B1A4
-
- 01
- HAPPY DAYS
- B1A4
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- 02
- Drive-Japanese ver.-
- B1A4
-
- 03
- Colorful
- B1A4
-
- 04
- HAPPY DAYS - Inst.
- B1A4
-
- 05
- Drive-Japanese ver. (Inst.)
- B1A4
-
- 06
- Colorful - Inst.
- B1A4