Sharon Den Adel- beautiful voice, beautiful woman.
Ann Wilson
Sandi Saraya- Saraya made two great albums, When The Blackbird Sings being the better of the two.
Robin Beck- Trouble Or Nothin' is a great 80s pop rock album.
Joanna Dean and Sass Jordan
Pink- her bluesy duet with Steven Tyler on Misery is very good.
Pat Benatar in the 70s early 80s
Pamela Moore for Sister Mary
and Susannah Hoffs' voice used to do strange things to me in my teens.
Marcie Free (Unruly Child- was Mark Free)
Anyone remember Stevie Lange, best known for a female deodorant ad ("Limarra") based on her only hit Remember? Powerful voice.
https://www.youtube.com/watch?v=IL7GOVoA2_o&feature=related