Exactly how popular is the YG group Big Bang? Apparently the five member boy band is one of the hottest groups out in Korea. Tickets for their three-day concert, �"Big Bang is Great,” went on sale not only once, but twice. The venue, Olympic Stadium, which holds over 15,000 seats, had to meet the demands of the faithful Big Bang fans. The second time the tickets went on sale, 5,000 fans have already reserved their tickets. The concert, which is scheduled for December 28 through December 30, is noted as being one of the most anticipated concerts of the year. The tickets sold out within 10 minutes. Check out Big Bang's Performances: Big Bang - Lie (Live Performance) Big Bang & Wonder Girls - Lie and Tell Me (Live Performance)