I just adore singers of whatever sex, but especially female. Hmm, that doesn’t read quite right, but I’ll leave it.
Today I listened to Amy. And Tori. And Dido (need some kit that can reproduce some really low hz for her). Regina Spektor is very special. No sufficient words for Christine McVie.
And an outlier, a very special thing that I don’t often do, as I am not a fan of opera - Dame Kiri Te Kanawa, in the Decca recording of Marriage of Figgaro. Divine. Some may have heard majesty in the film Shawshank Redemption.
edit - and for crying out loud, two legends who must be named are Agnetha Faltskog and Anni-Frid Lyngstad. They sang in a small band known in Australia as ABBA.