Britney Spears: "Circus" (song) tops the 3 million mark
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Britney Spears' 2008 smash "Circus" tops the 3 million mark in digital sales this week. It's Spears' second song to reach this threshold. "Womanizer," her hit right before "Circus," has sold 3,330,000 copies. Note: Several of Spears' biggest hits, notably "…Baby One More Time" and "Oops!...I Did It Again," were released prior to the advent of the digital era.
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