Train rode to the top of the iTunes charts in 2010: The group's catchy "Hey, Soul Sister" was the top-selling song of the year.
Katy Perry's "California Gurls" with Snoop Dogg is No. 2, while Eminem's "Love the Way You Lie" featuring Rihanna is third. Rounding out the top five is B.o.B's "Airplanes" with Hayley Williams and Taio Cruz's Dynamite.
Eminem has the top-selling album with "Recovery," followed Ke$ha with "Animal." Lady Gaga came in at No. 3 with "The Fame," ''Need You Now" from Lady Antebellum was No. 4 and Taylor Swift's "Speak Now" was fifth.