Which female singer has the best voice of 2009 -Christina Aguilera
Which female singer has the best voice of 2010 -Christina Aguilera
Which female singer has the best voice of 2011 – Nicole Scherzinger
Which female singer has the best voice of 2012 – Jennifer Lopez
1.Rihanna
2.Jennifer Lopez
3.Christina Aguilera
4.Selena Gomez
5.Pink
6.Alicia Keys
7.Mariah Carey
8.Britney Spears
9.Jessie J
10.Lana Del Rey
11.Rita Ora
12.Nicki Minaj
13.Ciara
14.Kelly Rowland
15.Avril Lavigne
16.Miley Cyrus
17.Nelly Furtado
18.Kesha
19.Ellie Goulding
20.Taylor Swift
