4:13 B1A4 - O.K (Full ver.) 4:13 [MV] B1A4 _ O.K 3:33 B1A4 - Okay, 비원에이포 - 오케이, Music Core 20110423 3:34 B1A4 - OK [Audio] 3:08 B1A4 - Okay, 비원에이포 - 오케이, Music Core 20110604 4:07 B1A4 - Lonely (없구나) (Full ver.2) 3:44 B1A4 - 못된 것만 배워서 3:44 [MV] B1A4 _ Only learned bad things(못된 것만 배워서) 3:39 [MV] B1A4 _ A lie(거짓말이야) 3:38 [MV] B1A4 _ BABY I'M SORRY 3:10 [HD] [110605 SBS популярная песня] B1A4 4:13 B1A4 - O.K. (MV) 2:57 [HD] 110513 B1A4 - OK 3:33 【TVPP】B1A4 - Okay, 비원에이포 - 오케이 @ First Debut Stage, Show Music core Live 3:08 【TVPP】B1A4 - Okay, 비원에이포 - 오케이 @ Show Music core Live 4:47 B1A4 - O.K 안무 영상 (Dance Practice Video) 3:34 #B1A4 - OK (Audio) 4:04 120119 B1A4 - Beautiful Target + O.K [Live - KBSJoy The 21st Seoul Music Awards] 3:26 B1A4 비원에이포 - TRIED TO WALK 걸어 본다 (color coded lyrics han/rom/eng) 2:58 [110610] B1A4 - OK (Goodbye Stage)