Will.i.am, Co-Writer, 'Boom Boom Pow'
TRACK SALES: 6.3 million
ALBUM SALES: 3.15 million
TOTAL SONGWRITING ROYALTIES: $859,950
Remixed numerous times, licensed for movies (in the end credits to G.I. Joe: The Rise of Cobra), featured on American Idol (in the 2009 finale) and performed at the Super Bowl, 2009's "Boom Boom Pow" is perhaps the biggest-earning song on this list. Of course, the Peas have to split the royalties and licensing fees four ways.