Stay with me here, I am musically inept and need to set the scene.
We are in a nightclub, somewhere between 1940 and 1960. Dark and smoky. The men wear suits, and have checked their hats but not their guns. Mike Hammer might be there, Easy Rawlins knows he wouldn’t be allowed in. There is a band, the drummer is only using brushes, and the focus is on the singer. She is a young woman, wearing a sheathe dress and matching gloves, singing into an old-fashioned standup microphone. She is not singing about happy things.
I have tried looking for “torch songs”, but I am not getting what I want from that search term. Any help re: genre, artists, etc. will be appreciated.
"Blues" comes to mind. As someone famous once said (I forget who), "You don't have to be down and out [i.e., poor] to have the blues. Hell, even Howard Hughes had the blues!"