[Album] Tik Tok
Secret love story of '2PM'. They release their new single 'Tik Tok' after their huge success of single 'Heartbeat'. 'Tik Tok' is about top star's secretive love story with various beautiful string sounds. Also actress 'Yoon EunHye' participated as a guest singer of this song, and she made this song more addictive with repetitive chorus part 'Tik Tok Tik Tok Tik Tok'.