It was actually an account of how Wheatstone developed the English concertina from the flute harmonique, through the acoucryptophone and symphonium. Who knew that free reeds were once called fixed springs? I didn't. Or that Wheatstone got his first patent in 1830 for the application of a new principle in musical instrument construction?

The Dave Townsend interview was particularly good in publicising the work of Concertinas at Witney. Who says the BBC does nothing for trad music (even when, like this, it seems to emerge by accident?)

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