Happy Video (MV)

"Happy" is a song written, produced, and performed by American singer-songwriter Pharrell Williams, released as the only single from the soundtrack album for the film Despicable Me 2 (2013). The song was first released on November 21, 2013, alongside a long-form music video. The song was reissued on December 16, 2013, by Back Lot Music under exclusive license to Columbia Records, a division of Sony Music.

The song also served as the lead single from Williams's second studio album, Girl (2014). An official remix features American rapper Sky Blu of LMFAO.

The song has been highly successful, peaking at No. 1 in the United States, United Kingdom, Canada, Ireland, New Zealand, and 19 other countries. It was the best-selling song of 2014 in the United States with 6.45 million copies sold for the year, as well as in the United Kingdom with 1.5 million copies sold for the year. It reached No. 1 in the UK on a record-setting three occasions and became the most downloaded song of all time in the UK in September 2014; it is the eighth-highest-selling single of all time in the country.

It was nominated for an Academy Award for Best Original Song. A live rendition of the song won the Grammy Award for Best Pop Solo Performance at the 57th Annual Grammy Awards.

The music video for "Happy" was nominated for Best Male Video and Video of the Year at the 2014 MTV Video Music Awards. It also won the Grammy Award for Best Music Video at the 57th Annual Grammy Awards. The song was Billboard's number-one single for 2014. "Happy" was the most successful song of 2014, with 13.9 million units (sales plus equivalent streams) worldwide.