Confession: it wasn't meant to be silent. I spent most of the afternoon and more of the evening composing a simple music line to go with this -- matching up the timing of the different "chapters," and everything.
But although I had good luck with the first on-line MIDI-to-Mp3 converter I tried (the tune came out sounding exactly like it went in), every time I've tried it since the MP3 results sound nothing like the tune I wrote: making the overtones louder than the actual notes, and the incorrect balance of the overtones, too, so it comes out in an entirely different, discordant, key.
So then, I decided to try AudioSwapping from YouTube's library. But that means they stick an ad on your video. I wouldn't even have minded that if the ad came up when the video first starts. But no. It had to pop up and cover the bottom of the image just at the point where the creature's feet get filled in.
So back to silence it went.
(PS: the first dozen views are all me, checking back to see if my changes had taken effect yet, and figure out Why T.F. the music I'd chosen played sometimes, and not others...).
:-/
[ETA: I found the decent converter! So here's a link to the video with its intended music: http://youtu.be/-1uNuDcGI0w
I tried to upload it as a response to the first one, but it won't show up until I, as owner of the first one approve it. But there is no notice anywhere on YouTube that I've received a video response -- so I can't approve it. :-/]