B1A4

This boy band consisting of five persons

 namely Jinyoung, Baro, Sandeul, CNU and Gongchan ...

The leader is Jinyoung(that have a very cute face).

The main vocalist is Sandeul(that have a very adorable smile) 

The main rapper is Baro(the charismatic rapper)

The vocalist CNU(the last member to be revealed)

and the last

the maknae,gong chan(the sweet maknae)

this boy band named according to their blood type

that have 4 'A' blood type

and 1 'B' blood type...

have u heard 2 their song???

the title of the song is 'OK'

enjoy...