Here (in no particular order) are some of my favourite female vocalists from the 60s, 70s and 80s and one even earlier, each with a link to one of their best songs (imho).
Each song was first recorded more than 25 years old.
Yes of course there are many other great female voices from more recent years but if you don't know these then they are worth a listen.
If you do, enjoy a little nostalgia.
Susannah Hoffs - Manic Monday
Stevie Nicks - Gypsy
Karen Carpenter - Rainy Days and Mondays
Judith Durham - I’ll never find another you
Cyndi Lauper - Time after time
Aretha Franklin - Think
Annie Lennox - When tomorrow comes
Barbara Streisand - Woman in Love
Tina Turner - Simply the Best
Dolly Parton - Jolene
Bette Midler - The Rose
Cher - Gypsies,Tramps and Thieves
Judy Garland - Over the Rainbow