03:23
B1A4 - 이게 무슨 일이야 (What's Happening?)
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03:22
[REQUESTED] B1A4 (비원에이포) – What's Happening? (Color-Coded Lyrics/가사 HAN/ROM/ENG)
04:51
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B1A4 - What's Happening? (2013.06.15) [Music Bank w/ Eng Lyrics]
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03:21
B1A4 - What's Happening (2013.06.08) [Music Bank w/ Eng Lyrics]
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[STAR ZOOM IN] B1A4_이게 무슨 일이야(What's Happening?) 170622 EP.39
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03:35
[KCON 2014 USA] B1A4 l What's Going On
03:38
050921 B1A4 Intro What's Happening at BOF 2021