The music world is filled with dozens of influential females. From The Andrews Sisters in the 1940s to modern day songstresses like Adele, Beyonce, and Demi Lovato. Just a heads up not everyone is going to like these choices, but you can't deny that they are very influential in the music industry and shaped the mold for female singers today.
The Andrews Sisters
You might not agree with all of these or you may add some of your own, but no dout these women were defintetely influential in the music field!