| Artist | : | B1A4 - '이게 무슨 일이야' 안무 영상 ('What's Happening?' Dance Practice Video) |
| Title | : | B1A4 OFFICIAL + |
| Duration | : | 290 |
| Source | : | Youtube |
| Type of file | : | Audio/Video (.mp3 .mp4) |
| Artist | : | B1A4 - '이게 무슨 일이야' 안무 영상 ('What's Happening?' Dance Practice Video) |
| Title | : | B1A4 OFFICIAL + |
| Duration | : | 290 |
| Source | : | Youtube |
| Type of file | : | Audio/Video (.mp3 .mp4) |