Lumatone mapping for 19edo
There are many conceivable ways to map 19edo onto the Lumatone keyboard. Only one, however, agrees with the Standard Lumatone mapping for Pythagorean. This is "Preset 4 — 19-ET Bosanquet" in the official manual.
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Since 19edo can be conceptualised as a chain of essentially pure 6/5's, the kleismic mapping is particularly good for extending your range and making good chords easy to play.
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The Magic mapping is also a possibility:
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