Of course they were lip syncing. They always do. Big Bang and 2NE1 are 2 hit wonders for me, way overhyped. I do agree with Shockbox, there's a lot of expectation on them so they'll never be able to deliver. Although if they came back with another Mr Taxi/Flower Power/even Galaxy Supernova, I'm sure people would be happy. They're basically the Korean Westlife aren't they, hated but popular.