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Mander Organs

JohnDubery

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About JohnDubery

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  1. Casson mixtures

    Some things I have discovered since posting the question - in case of interest to anyone else: Details of the Great Mixture V on the London Organ School organ can be found in Wedgwood here - https://archive.org/stream/cu31924022450831#page/n131/mode/2up - with the curiosity that this article speaks there being independent 12th and 15th stops, but the stop-lists I have found (NPOR and Dixon's article about Casson) omit these. Somewhat furthering the curiosity is that both Audsley and Wegdwood list the organ school organ as containing an example of the stopped harmonic 12th. Details of the Great Mixture III at Dyserth can be found in the NPOR (D017178) Wedgwood suggests that Casson used the principle that only one rank should break at a time - https://archive.org/stream/cu31924022450831#page/n129/mode/2up - both of the above mixture compositions conform to this. John
  2. Casson mixtures

    "Namirembe Cathedral, Kampala" - thanks for that I'd never have thought to look. It seems, though, that the instrument dates from a couple of decades after Thomas Casson died, and has since been rebuilt a bit. Are any other Casson organs hiding in unlikely-seeming places?
  3. Casson mixtures

    Colin, thanks. Yes, there is not a lot; apart from Casson's own writing there is material by Elliston, Matthews, Dixon, Bewerunge, plus a few small articles here and there. The idea of looking at those who influenced him is interesting; that makes me think to look more at those he influenced too (e.g. the early Harrison Harmonics mixtures). Thanks, John
  4. Casson mixtures

    Hi, can anyone enlighten me on how Thomas Casson built up his mixtures? I find the organs of Thomas Casson quite fascinating for their ideas and inginuity - about which a fair amount can be found from various sources. However there are a couple of areas in which information is rather thin on the ground, and his mixtures is one. In some cases I can find the combination of pitches at the start of the mixture (e.g. the Omagh Great had "Harmonics 15.17.19.21.22 V" and Swell had "Mixture 15.17.19.22 IV") but that is all. I can find no reference to the types of ranks used, or the relative power or scaling; nor can I find any reference to how his mixtures break beyond a comment somewhere about only breaking one rank at a time. Any information or references gratefully received, thanks.
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