Obviously Miles Davis is the only answer, but only while watching Elevator to the Gallows because he composed and performed the soundtrack. Otherwise I just listen to the thing I’m watching.

Some reccs I would classify as “Jazz Noir”:

Goodbye Pork Pie Hat (Charles Mingus)
Blue in Green (Miles Davis)
Cry Me A River (Dexter Gordon)
Sugar (Stanley Turrentine)

Watching? Whatevers on in the show, guess. Do people usually listen to music while they watch shows?

Yakety sax, sometimes.

I imagine In a Silent Way would be incredible in a crime drama, for example over a murder scene, with all the other sound cut out and just that playing (more like “foreground music”, if that’s a thing)

Don’t true crime “stuff” usually have background music already? But to answer your question, dark film scores. Check out music from composers like Jóhann Jóhannsson and Hildur Guðnadóttir.

Maybe self help tapes for enjoying murder porn?