Film Noir, a film study of life lived in the shadows of the forties and fifties. It proved that all the shooting was not going on in war torn countries, but also on the streets of America, and it wasn't all men shooting men. It seems the women were determined that they be counted on to stand up for what ever film noir women stood up for.
Film Noir would not be complete without the saloon singer belting out a torch song, or in my example a man out late at night, alone and sad from a love affair gone wrong needing someone to tell his troubles to, and who better than the bartender.
Back in the film noir days the songs told stories. I think they were mostly sad songs, not designed to make you feel better, but to tell you that at least the singer was as miserable as you were. It could help.