B1A4 drop surprise single 'D-DAY' two hours before 15th anniversary concert

B1A4 released digital single D-DAY on July 31 at 6 PM. Two hours later, their 15th debut anniversary solo concert D-DAY kicked off at Seoul KBS Arena.

The drop was framed as a surprise gift marking both the group's debut anniversary and their fanclub establishment day. It also signals the start of new activities following the group's establishment of their own agency, Bi One A Four Company (비원에이포컴퍼니), earlier this year. The concert running July 31 through August 2 at KBS Arena is the first solo show under that label.

The track has a backstory: D-DAY was in contention for the title track of 9th mini album SET all the way to the end of production, before being set aside. SET dropped on April 21 — the exact date of B1A4's original debut album release — as the official launch of the 15th anniversary project.

For the music video, members Shinwoo, Sandeul, and Gongchan took hands-on roles across planning, storyboarding, and filming. (Three members running the whole production pipeline is a flex, not a footnote.)

The 15th anniversary arc now has two releases attached to it. SET in April. D-DAY today. The three-day Seoul concert run closes out July.