가온차트 씨스타 1위_2012 KPOP CHART 5월 첫째주.. TOP 30 (120422 - 120428)
<120503 - 120504 l HD l Kpop Chart l Gaon Chart / Top 30>
Gaon Chart is the national chart of South Korea that is intented and equivalent of Oricon Chart of Japan and in US .
Gaon Chart is the official chart of SOUTH KOREA.