2PM' released a new song 'Open Happiness'. This song was co-released in America by 'Patrick Stump, Janelle Monae' - Popular American artists, and the Coca-Cola company, and 2PM made their own version of this song to release in Korea. Thc Coca-Cola company wanted to give happy message to korean people.
オープンハッピネス (コカ・コーラCM `mini-coke`編)
2PM（トゥーピーエム） / Open Happiness