Music Core 2014 Year End Special Part IV [VIXX, B1A4,MAMAMOO, BTS, TVXQ Performance] Oleh tommy Monday 29 December 2014 Music Core 2014 Year End Special VIXX - ERROR (Remix) B1A4 - Lonely MAMAMOO - Piano Man BTS - Danger (Remix) TVXQ - Something online advertising SHARE THIS..! Share Like G+ Tweet Tweet Tag : dvo, Event