Having debuted with their title track 'Freeze' last month, Block B is back on the stage of MBC's Music Core with the performance of a follow-up track from their debut mini album, "Do You Wanna B". Their follow-up track 'Wanna B' is an up-tempo hip-hop style of song that is chock-full of rap lines and brings out the distinct voices of each member. Check out their stage below!