Big Mama - His eye is on the sparrowAn amazing vocal performance.
In my opinion, YG entertainment took a big gamble by signing these ladies, diverting away from the usual appearance-centric singers. Looks like they found 4 phenomenally talented women that overshadows anything they don't have. Sure paid off, because these girls are a breath of fresh air compared to the other "talent" in Korea these days.
I think they are originally gospel singers, which explains their PERFECT harmony.
Nevertheless, Bravo YG.