For some reason, choosing "Female Vocalists" removes Rihanna, Lady Gaga, Britney Spears and Beyonce.
Usually I would be like LOL OKAY VOCALISTS but then WHY does Katy Perra even make an appearance?
Allow me to reveal the other numbers and the TRUE TOP 20. (
Source)
Lady Gaga - 3,068,686 listeners
Rihanna - 3,584,261 listeners
Britney Spears - 2,639,406 listeners
Beyonce - 2,729,304 listeners
Which brings the list to
01 - Rihanna - 3,584,261 listeners
02 - Lady Gaga - 3,068,686 listeners
03 - Katy Perry - 2.840.936 listeners
04 - Beyonce - 2,729,304 listeners
05 - Britney Spears - 2,639,406 listeners
06 - Madonna - 2.556.874 listeners
07 - Christina Aguilera - 2.278.483 listeners
08 - Adele - 2.016.102 listeners
09 - Evanescence - 2.000.676 listeners
10 - Amy Winehouse - 1.986.018 listeners
11 - Nelly Furtado - 1.948.841 listeners
12 - Kelly Clarkson - 1.940.869 listeners
13 - Björk - 1.822.962 listeners
14 - The Cranberries - 1.803.814 listeners
15 - Alicia Keys - 1.773.062 listeners
16 - Gwen Stefani - 1.766.585 listeners
17 - Portishead - 1.732.277 listeners
18 - Lily Allen - 1.712.886 listeners
19 - Norah Jones - 1.688.725 listeners
20 - Feist - 1.619.277 listeners