Block B was a boring classic K-Pop boy band that I didn't even know existed. They disappeared and then reappeared with "NalinA" and the colorful street gang, wannabe serial killer concept for some reason just blew up for me. I LOVED the very, very polished and colorful music videos catchy tunes... it has NOTHING to do with boring boys bands anymore.
What do you think? Do you have one that was 'corrected' in its trajectory?
Do you know some that made the wrong evolution decision?