Complex sentence: "Happy" is a song written, produced and performed by American singer and producer Pharrell Williams, from the "Despicable Me 2" soundtrack album, the song will also be included on his second studio album which will be released in 2014.
Split into simpler sentences: Happy is a song written, produced and performed by American singer and producer Pharrell Williams, from the "Despicable Me 2" soundtrack album. The song will also be included on his second studio album which will be released in 2014.