First time I knew this was when I attended the SiHae event in Trinoma last August 15, 2012. And they said "SiHae oppas, please dance 'Oppa Gangnam Style" or something like that. At first I thought it was a Super Junior song, because I searched about it and I looked for the artist's name and it is "PSY", I have read it as "SPY" so I thought it was included in Super Junior's repackaged album. I never thought this would really be a hit like this, and it's popular here in the Philippines too. Okay, just sharing. XD