Not looking primarily for jazz and latin type stuff - for which there are far more examples.
Primarily folk, country, blues, soul, fusion, etc.
I'll start it off with these:
Jose Gonzalez.
Willie Nelson.
Leonard Cohen
So let's see what comes of this.
Can also be an artist who only uses a classical for one recording, or one live song, or whatever.
I just love the classical/vocals combo for these kinds of genres.
Thanks in advance