I had a picture pop into my head of a ballroom which, for no reason other than decay, rising water levels and magical realism, has slipped underwater.
This is the music they play there…
Prize for the first person who guesses the relevance of the title! Mrs Weston’s Waltz[Audio http://radiomovies.files.wordpress.com/2009/07/reform-waltz.mp3]This one’s self explanatory… The fortepiano sinks [Audio http://radiomovies.files.wordpress.com/2009/07/the-fortepiano-sinks.mp3]
Great photo by bulletproofsoul
Stumble it if you like it..: 
Oh, these are lovely! I am amused by the character of the cello line in Mrs. Weston’s Waltz.
The Weston’s host a ball in Jane Austen’s Emma. Could that be what you are referring to?
Love both pieces!