I never did solve the mystery of the news about Plato's final hours, listening to (and correcting the measure) of a Thracian servant girl playing the flute. It was announced as a discovery from a carbonized scroll at Pompeii about a year ago, but as soon as I read that, I knew that I had heard the story before. Canvassing the web, I see some scattered mentions well antedating the Pompeii news, but nothing citing to source. Peculiar. I have a clear memory of talking about it in a seminar during the MFA. But every source reporting the news reports it as a discovery.
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Update, apparently there are six classical sources for the historical life, but tracking them down doesn't look easy/possible at the moment. To be continued.