32. Tyga ft. Chris Richardson - Far Away

(Photo by Noel Vasquez/Getty Images)

31. Wiz Khalifa - No Sleep

(Photo by Kevin Winter/Getty Images)

30. Afrojack ft. Eva Simmons - Take Over Control

(Photo by Michael Tullberg/Getty Images)

29. Adele - Someone Like You

(Photo by Rick Diamond/Getty Images for CMT)

28. Iyaz - Pretty Girls

(Photo by Mark Sullivan/Getty Images for Ball Up)

27. Lady Gaga - You And I

(Photo by Andrew H. Walker/Getty Images)

26. Jason Derulo - It Girl

(Photo by Kevin Winter/Getty Images)

25. Nayer ft. Pitbull & Mohombi - Suave (Kiss Me)

(Photo by Isaac Brekken/Getty Images)

24. Jennifer Lopez ft. Pitbull - On The Floor

(Photo by Kevin Winter/Getty Images)

23. Adele - Rolling In The Deep

(Photo by Dave J Hogan/Getty Images)

22. Pitbull ft. Marc Anthony - Rain Over Me

(Photo by John Parra/Getty Images)

21. The Band Perry - If I Die Young

(Photo by Ethan Miller/Getty Images)

19. Cobra Starship ft. Sabi - You Make Me Feel

(Photo by Jemal Countess/Getty Images)

18. David Guetta ft. Nicki Minaj & Flo Rida - Where Them Girls At?

(Photo by Jim Dyson/Getty Images)

17. Rihanna - Cheers (Drink To That)

(Photo by Ian Gavan/Getty Images)

16. Martin Solveig ft. Dragonette - Hello

(Photo by Pascal Le Segretain/Getty Images)

15. Lil Wayne - How To Love

(Photo by Ethan Miller/Getty Images for ABC)

14. Tinie Tempah - Written In The Stars

(Photo by Stuart Wilson/Getty Images)

13. Hot Chelle Rae - Tonight, Tonight

(Photo by Rick Diamond/Getty Images)

12. Dev - In The Dark

(Photo by Jag Gundu/Getty Images)

11. Britney Spears - Till The World Ends

(Photo by Bryan Bedder/Getty Images)

10. Foster The People - Pumped Up Kicks

(Photo by Kevin Winter/Getty Images)

9. Bad Meets Evil ft. Bruno Mars - Lighters

(Photo by Scott Legato/Getty Images)

8. Nicki Minaj - Super Bass

(Photo by Jemal Countess/Getty Images)

7. Gym Class Heroes ft. Adam Levine - Stereo Hearts

(Photo by Scott Gries/Getty Images for Vh1)

6. Pitbull ft. Ne-Yo - Give Me Everything

(Photo by Ethan Miller/Getty Images for ABC)

5. Maroon 5 ft. Christina Aguilera - Moves Like Jagger

(Photo by Michael Loccisano/Getty Images for Sports Illustrated)

4. Lady Gaga - The Edge Of Glory

(Photo by Jag Gundu/Getty Images)

3. Britney Spears - I Wanna Go

(Photo by Ethan Miller/Getty Images for ABC)

2. LMFAO - Party Rock Anthem

(Photo by Mike Coppola/Getty Images)

1. Katy Perry - Last Friday Night (TGIF)

(Photo by Dave M. Benett/Getty Images)

1. Katy Perry - Last Friday Night (TGIF)

Katy Perry (Photo by Neil Lupin/Getty Images)

(Photo by Neil Lupin/Getty Images)