Looking for good recordings of female vocals I have not yet tried...

I am going to mention some artists, already listed.

Diana Krall

Eva Cassidy

Natalie Merchant

Alison Krause

Aretha Franklin

Rachel Price

Norah Jones

Alisa Amador

Bonnie Raitt

Sade

Gillian Welch

Roberta Flack

All these singers sound best on MQA playback and albums found on Tidal.

Tedeschi Trucks Band : Midnight in Harlem :  Revelator album

Jacqui Naylor :is someone new to me who I just acquired an album. 

Nora Jones

Brandi Carlile 

Anne Bison:

Grace Potter

Gin Wigmore

Carla Morrison, Mexican alternative pop singer from Tecate, MX. she has an amazing voice and sings extremely passionately and re-recorded her Amor Supremo in an acoustic version Amor Supremo (Desnudo)