<page_title> List of best-selling singles of 2014 in the United States </page_title> <section_title> List of best-selling songs </section_title> <table> <cell> Pharrell Williams <col_header> Artist </col_header> </cell> <cell> "Happy" <col_header> Single </col_header> </cell> <cell> 6.45 <col_header> Sales (in millions) </col_header> </cell> </table>
"Happy" by Pharrell Williams was the best selling song of 2014 with 6.45 million copies sold in the United States.