Top Ten Musics Chart from Billboard.com(10 July 2010)

1. California Gurls
    Katy Perry Featuring Snoop Dogg
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2. Love The Way You Lie
    Eminem Featuring Rihanna
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3. OMG
    Usher Featuring will.i.am
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4. Airplanes
    B.o.B Featuring Hayley Williams
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5. Billionaire
    Travie McCoy Featuring Bruno Mars
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6. Find Your Love
    Drake
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7. Cooler Than Me
    Mike Posner
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8. Your Love Is My Drug
    Ke$ha
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9. Alejandro
    Lady Gaga
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10. Ridin' Solo
      Jason Derulo
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This chart is from :  Billboard.com