Late night blues

B.B. King - "His Best - The Electric B.B. King".

I always recommend "Midnight Blue" by Kenny Burrell. Although the music is technically jazz, it has a bluesy, late-night, smoky vibe. Blues aficionados all have it in their collections.

The blues purists would take my Blues Society membership card for these next recommendations, but they may fit into what you’re looking for.

There is a Dutch woman who sings blues and prefers to stay local, singing in clubs around The Netherlands, Carmen Gomes. The purists would say it’s white bread blues, but it’s definitely blues. She has a good voice and band, her albums are very well recorded and it’s interesting to get a Dutch perspective on the blues. There was a thread about her on this forum not too long ago:

Audiogon Discussion Forum - Carmen Gomes

Curtis Stigers is the male version of Carmen, more to the jazz side, though. He has one album I particularly like, "Gentleman." It has the late-night feel and sounds great. It’s worth checking out.