Rounding out the top tier are Taylor Swift's "I Knew You Were Trouble" at No. 6, Drake's "Started From the Bottom" at No. 7, will.i.am and Britney Spears' "Scream & Shout" at No. 8, Lil Wayne's "Love Me" featuring Drake and Future at No. 9 and Mars' "Locked Out of Heaven" at No. 10.
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