of Gaon Digital Chart number ones of 2011 List of Korea K-Pop Hot 100 number ones Footnotes Notes References External links Girls' Generation songs Songs with feminist themes SM Entertainment singles Interscope Records singles 2011 singles Billboard Korea K-Pop number-one singles Song recordings produced by Teddy Riley Korean-language songs Songs written by Yoo Young-jin Songs written by Teddy Riley 2011 songs Gaon Digital Chart number-one singles