"Happy" is a song written, produced, and performed by American singer and producer Pharrell Williams from the Despicable Me 2 soundtrack album. It also served as the lead single from Williams' second studio album, Girl (2014). It was first released on November 21, 2013, alongside a long-form music video. The song was reissued on December 16, 2013. "Happy" is a midtempo soul song on which Williams' falsetto voice has been compared to Curtis Mayfield by critics. The song has been highly successful, peaking at number one in the United States, United Kingdom, Canada, Ireland, New Zealand, and 19 other countries. It has sold over 5.6 million copies in the United States and over 1.65 million copies in the United Kingdom, and has reached number one in the latter on a record three separate occasions. With worldwide sales of 10 million copies, it has become one of the best-selling singles of all time. It was nominated for an Academy Award for Best Original Song but lost to "Let It Go" from Frozen.