What are some good song idea's?

I am thinking of doing a tap or jazz solo this year and our theme this year is Dancing Through The Decades. we r doing songs from the 80's-2010. I am needing a more modern song (from '09 or '10). Somthing between Lady GaGa, Justn Bieber, Usher, Willow Smith, or Ke$ha. plz help me(: (i am also 13 years... show more I am thinking of doing a tap or jazz solo this year and our theme this year is Dancing Through The Decades. we r doing songs from the 80's-2010. I am needing a more modern song (from '09 or '10). Somthing between Lady GaGa, Justn Bieber, Usher, Willow Smith, or Ke$ha. plz help me(: (i am also 13 years old if that helps) (:
Update: and it also needs 2 be a sorta fast song with a great beat(:
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