Pharrell happy
Pharrell Williams uses 'Happy' for climate change
Williams wants to help gather a billion voices through collective ‘Happy’ photographs to world leaders.
Sheeran’s 2014 album X also came first for the most streamed album.
'Happy' has been confirmed as Britain's most downloaded track of all time.
Singer Beyonce and rappers Eminem and Iggy Azalea led the nominations.
R&B star Pharrell kicked off the show with 'Come Get It Bae' and won two awards.
The album, led by Oscar-winning hit 'Let It Go', sold 133,000 copies in its 20th week on the chart.
Pharell Williams will join the show as a coach for its seventh season.
Ross beat the hip hop star to the top of the Billboard 200 album chart.