- Tik Tok
- Tik Tok (feat. Yoon Eun Hye (윤은혜))
"Tik Tok" is 2PM's fourth Korean digital single. The song counts with the collaboration of the singer/actress Yoon Eun Hye and was used for Cass Beer CF which stars 2PM members Nichkhun and Taecyeon. The song reached #90 on the Gaon 2010 digital yearly charts with 1,522,694 copies sold.