Which female singer has the best voice of 2009 -Christina Aguilera
Which female singer has the best voice of 2010 -Christina Aguilera
1.Nicole Scherzinger
2. Lady Gaga
3. Christina Aguilera
4. Beyonce
5. Jennifer Lopez
6. Rihanna
7. Katy Perry
8. Shakira
9. Jessie J
10. Fergie
11. Taylor Swift
12. Britney Spears
13. Jennifer Hudson
14. Nicki Minaj
15. Miley Cyrus
16. Keri Hilson
17. Kelly Rowland
18. Julianne Hough
19. Leann Rimes
20. Skylar Grey
