My fantasy is just below. Can MP3TAG work this way?
Select all the tracks using MP3TAG the have a Title blank or the word "Title" in it. Looks like I can figure out this from the on line help.
Import it to my database. Correct them, replace with the titles in my database. Can figure out that, too.
Export the updated list from my database. Easy.
Import the list to MP3TAG and update the Title tags. I don't see a matching "Import" function. Is there one?
Will have to do the same thing for Artist and Genre, in separate passes.
(Services like Discogs are of little use, my database, about 30K tracks, is of folkdance music with low production quantities, as low as 20. I intend to use the Genre tag to hold the name of the dance, though I am open to a better suggestion.)