“SOLO DAY” is B1A4’s fifth mini-album. The title song “SOLO DAY” was used as the lead track. Leader Jinyoung produced all songs on the album. CNU also produced 1 song in the album.

▪ Tracklist:

1. SOLO DAY
2. 내가 뭐가 돼
3. 잘 돼가
4. 물 한잔
5. Drive
6. YOU (Feat. 선미)

▪ Released: July 14 2014.