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Bb/f Jeffries Layout


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I'm just finishing up a very tasty 38-button Bb/F Jeffries, and there seems to be an important difference in layout between it and my regular squeeze, a C/G.

If I transpose the inner row on the left hand to Bb/F, my C/G goes like this:

A/C, C/E, F/G, A/Bb, C/D, E/F#.

On the Bb/F instrument, the first five 'core' buttons are all shifted one place to the right, and the 'extra' button is moved from extreme right to extreme left, so that it goes:

D/G, A/C, C/E, F/G, A/Bb, C/D.

It seems to have been made like this, since the 'extra' D and G reeds are too big to fit the slots in the far right position. So the question is, why? Was the sideways shuffle the result of a special order, perhaps? Or has anyone encountered it before?

I believe the 'core' reeds could all be shifted one place to the left without too much trouble, but then I'd have to source a pair of reeds to fill the far right spot. E/F# perhaps, or does anyone have a better idea?

All comments, reflections and suggestions gratefully received.

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