What are some really good jazz singers (any language)?

I really liked a Fredrika Stahl song, and I have always loved lounge music. I like the slower (romantic?) songs much better. I liked 'is this love' as sung by Corinne Rae. I also like Sinatra of course, but he mostly did more upbeat stuff (like big band or swing I think) I like large upright bass presence... show more I really liked a Fredrika Stahl song, and I have always loved lounge music. I like the slower (romantic?) songs much better. I liked 'is this love' as sung by Corinne Rae. I also like Sinatra of course, but he mostly did more upbeat stuff (like big band or swing I think) I like large upright bass presence with a slow (sexy?) vocalist, male or female. I am finding it difficult to sift through the poor recordings and old sounds of many of 50's American and French (still 50's?) jazz. Some is good but many I hate. Hopefully someone knows what I mean. I really look forward to your answers. Thanks!
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