According to Official Charts, "Happy" by Pharrell Williams was the best selling song of 2014 with 6.45 million copies sold in the United States.
[2] "Happy" and Idina Menzel's "Let It Go" are both songs from animated movies.
It topped the Frozen Soundtrack album on the last week of December.
This is the second time Swift has earned the top selling album of a calendar year.
She did it previously back in 2009 with her second studio album, Fearless, which made 3.22 million that year.