1. Lady Gaga, “Born This Way”

    2. Bruno Mars, “Grenade”

    3. Katy Perry, “Firework”

    4. Katy Perry featuring Kanye West, “E.T.”

    5. Jennifer Lopez featuring Pitbull, “On the Floor”

    The up-tempo dance-pop song features vocals from American rapper Pitbull and samples of Kaoma’s 1989 single “Lambada.” “On the Floor” serves as Lopez’s debut release with The Island Def Jam Music Group, after the singer ended her 10-year partnership with Epic Records. It is also the first single from “Love?” to be released by Island Records, and the second time that Lopez and Pitbull collaborated on a song.

    6. Dr. Dre featuring Eminem & Skylar Grey, “I Need a Doctor”

    7. Justin Bieber featuring Jaden Smith, “Never Say Never”

    8. Enrique Iglesias featuring Ludacris & DJ Frank E, “Tonight (I’m Lovin’ You)”

    9. Britney Spears, “Hold It Against Me”

    10. Usher, “More”