Music lovers in Korean can immediately recognize ballad singer�Sung Shi Kyung by picking up just one refrain, but when it comes to recognizing his face, it seems that Sung is a little less fortunate. On August 28th's episode of�KBS's '1 Night 2 Days', Sung Shi Kyung took off his glasses for a popularity game. The rule was that Sung Shi Kyung was to stand for 5 minute in the middle of a city without his glasses. If no one recognized him, he would win. Sung Shi Kyung stated, "This is the first time that I will take off my glasses during a variety show." The result was that absolutely no one could identify Sung Shi Kyung without his glasses. Citizens just walked right past him without a second glance. Sung Shi Kyung then stated, "There are three people who should never take off their glasses: Pororo, Kim Tae Woo, and myself." The rest of the 1N2D members agreed, as they laughed, "No one can recognize you!" Do you think you would've spotted the star without his trademark glasses? Source: Sports Seoul via Naver