I've got a bit of music that's been stuck in my head, quite literally, for several years. It's symphonic, with strings leading the melody and some fairly serious horns backing them up. I'm fairly sure it's late 19th- or early 20th-century Russian; it's fairly classical in its style, but has that special bombast of Russian nationalist music. More Tchaikovsky than Rachmaninoff. It sounds like the final movement of a string concerto or (more likely) a symphony, but I'm not sure if it's the main theme or a secondary theme. It's in a minor key -- I think f minor, but I don't really trust my ability to remember an exact pitch after this many years.
Now the question is... given all of this, and the ability to hum the melody (or even transcribe it, I suppose)... how the hell can I figure out what piece it is?
(I've tried going to Amazon and listening to as many samples of pieces as I could find that might match this. Not much luck. There's a lot of music out there.)
Anyone have any ideas?