I have on my computer a file called "failure.mp3." It's a homemade recording of someone playing a rather sad piano piece; it's titled "failure," as far as I can tell, because something about the recording setup gave it a nasty buzzing overtone whenever the pianist plays a certain note, unfortunately the tonic of the key the song is in. Then again, maybe that's just the name of the song.
The file's been sitting on my hard drive for years. I have no idea who made it or where it came from, and I'm pretty sure I never did--it just showed up one day. It kept turning up whenever I'd scan my music folders for new media players, and I always didn't delete it because even as sloppy as it was, it was an okay piece. Still, it was a close thing.
And just now, when I went looking for a soundtrack for my short film for school (coming soon to a youtub near you, based on this) I thought of it instantly. And when I played it over the edited footage, it synced up perfectly. Ridiculously well. It goes loud when I'm silent, quieter when I'm talking, changes key at just the right time. It's beautiful, and uncanny.