Psy, the Korean rapper, performs at the Hard Rock Hotel & Casino during Rehab, the resort's weekly pool party, on October 21, 2012 in Las Vegas, Nevada. Photographer: David Becker/Getty Images
Psy, the Korean rapper, performs at the Hard Rock Hotel & Casino during Rehab, the resort's weekly pool party, on October 21, 2012 in Las Vegas, Nevada. Photographer: David Becker/Getty Images
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