Give a listen (or more) to Susanne Sundfør's wonderful album Music for People in Trouble. Not only she's got a beautiful voice, the lyrics is also something else (plus, from an audiophile perspective, you'll enjoy all the ambient noises). It's been on my turntable regularly for years, and I can't get bored of its beauty.
Looking for good recordings of female vocals I have not yet tried...
Most of my listeing is female vocals and classic Jazz. I have enjoyed current and older female singers. I have most of Billie Holiday through current Diana Krall and Julia Fordham. I enjoy good voices mainly acoustic. It would be helpful if it is music I can sample online. If the backing is mainly loud elctronic I would likely pass. Thanks for your thoughts and experience.