preliminary proposal: New Unicode characters for Arabic music half-flat and half-sharp

Hans Aberg haberg-1 at
Mon Mar 30 15:54:12 CDT 2015

> On 30 Mar 2015, at 00:49, Asmus Freytag (t) <asmus-inc at> wrote:
> It would be worth to bring the collection of music symbols up to a more comprehensive set in one go, rather than to do it piecemeal.

There is a similar issue to that of the math symbols, namely, one might add some which are not actually in use currently, added for future completeness:

Persian music notation uses two microtonal accidentals: the lowering koron and the raising sori.

Then intervals which will result in combinations of these are performed but not currently notated. This would be similar to the standard accidentals: koron-koron, koron-sori, and sori-sori.

In addition, these accidentals are not exact quartertones, which means that a lowering of the sori interval is not a koron, and raising a koron interval is not a sori. The reason they are not present in Persian notation, is that one usually do not transpose, but it is easy to do that in modern music computer engraving programs, so it might be nice to have them for that reason.

The same problem arises in Arab music notation, but possibly one might use some already present Western microtonal accidentals there.

> On 3/29/2015 3:07 PM, Werner LEMBERG wrote:
>>> That’s quite some variety. There are also the three-quarter flat and
>>> sharp in Western music to consider.  I’ll be able to dig into this
>>> after I get back to Ireland from Sweden on Friday.
>> You should check the Standard Music Font Layout (SmuFL) for details;
>> it also has a freely available font that covers it.
>> The recent version of the specification can be found at
>>      Werner

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