There’s an app described in this thread called “Shazam”, which has a MacOS version (not mentioned in the thread, but available at the link mentioned).
I just sicced it on this song which I digitized from cassette audiotape a decade or so ago. Doesn’t recognize.
The first line is ““There’s not a sound in this unhopeful world”” and it has several other oughta-be key-identifier lyrics like “pawned all our souvenirs” and “it seems Daddy can’t keep still”.
Can’t find any hits on the lyrics.
It was apparently taped from WBAI broadcasts of folks music and whowever this was would be in the general ilk of Richard and Linda Thompson, Andy Irvine, Richard Meyer, the band Steeleye Span, Jean Ritchie, Sally Rogers and Claudia Schmidt, John Roberts and Tony Barrand – those being other performers on other tracks from that cassette tape that I’ve successfully identified.
If it sounds familiar to you or remisicent of anyone’s style or voice, let me know. (And obviously if you actually know who this is or the name of the song, tell me!)