B1A4 debut in 2011 and that's mean they're rookie group in music industry. They're one of my favorite group. And Baro (ChaSunwoo) is my bias in B1A4
MBLAQ (Music Boys Live in Absolute Quality) is the best group I ever know. Ugh, I can't say anything. They're just awesome. My one-zero-one-five, they ruined my life for sure.