B1A4 Release MV for “Solo Day” The boys of B1A4 are back with “Solo Day” from their firth mini album. “Solo Day” is a story of a single carefree man who is content with his life. It’s a true summer track, which is cheerful in many ways. Have a look at the music video above. Admin K-Pop Concerts Previous Article Girl's Day Release Their Summer MV for "Darling" Next Article New Girl Group Ye-A Release Teaser For "Up & Down"