Bi’s voice is deep, masculine, and slightly gritty with a soulful twist. I think its what sets him apart from other Korean/Asian male singers. I especially love to listen to it when he’s speaking or singing in his native language, Korean. Now don’t get me wrong, I don’t think his voice is perfect, but its his voice, and cannot be confused with anyone else’s. The first time I heard “Nan, (I)”, I thought his voice was sultry and perfectly suited for r&b. I wish he does more ballads because that’s where his voice and style really shines. He knows that his voice is appealing, and uses it well to intro several of his songs, notably “Love Story”. Don’t you just love in “My Girl” when he sings “you are a beautiful ladaaay”)” *sigh*.