Who is "BIGBANG" ?!

JP ORICON
20090819 NO.2 12,084
20090820 NO.3   5,421
20090821 NO.3   3,665
20090822 NO.3   2,470
20090823 NO.5
20090824 NO.11
20090825 NO.8
-------------------W1 NO.3 27,843
20090826 NO.19
20090827 NO.20
20090828 NO.21
20090829 NO.19
20090830 NO.19
20090831 NO.16
20090901 NO.22
-------------------W2 NO.20 7,455  35,298
20090902 NO.38
20090903 NO.41
20090904 NO.40
20090905 NO.37
20090906 NO.46
20090907 NO.45
20090908 NO.41
-------------------W3 NO.42 3,076  38,374
-------------------11/23 NO.255 468  42,726
-------------------11/30 NO.245 441  43,167

TW 佳佳唱片
20090825-20090831 NO.3
20090901-20090907 NO.3
20090908-20090914 NO.6
20090915-20090921 NO.7
20090922-20090928 NO.17

TW 五大唱片
20090828-20090903 NO.3
20090904-20090910 NO.4
20090911-20090917 NO.8
20090918-20090924 NO.11

TW G-MUSIC
20090828-20090903 NO.3
20090904-20090910 NO.4
20090911-20090917 NO.7
20090918-20090924 NO.9