NOTATIO

I think it is Engraver and I use it as well. Maestro with Engraver clefs, flags and rests is a good combo.
Try to use Engraver flags at 23 or at 22.

Oh, JW Conceal Rests saves my life! I used to HIDE them manually, and it always broke the beam! It works perfectly now. I will do this tomorrow when I am back in my studio. Ere, I wonder if the piano will sound very virtuoso like, perhaps it is not needed, since it is just a part of the orchestra (o...

Ere - EXTREMELY HELPFUL! Thank you! Kiitos! This is the piano part in the orchestra, that is supported by the string section, in unison and in other chords. The dynamics is ff and above. It should be played with Pedal constantly (to get an amazing echo). The top note is a3 (4 ledger lines). However ...

3. For pianists: is this to quick? Would moving hands one octave apart be helpful, or there is no difference in performance? Is there any problem with RH/LH or LH/RH would be better? Additional question: is it possible to avoid cross staff and leave it up to performer? In a way it is easier to read...

Thanks for that. But I have notes that are even very low, from :b to :t 2. Centered beams is the most (and only?) appropriate cross-staff notation for notes alternating between the hands. Not always. Check Turangalila, with ledger lines or octave lines involved it is better not to have in between.

I don't want a syllable to be repeated.

Here I face numerous questions. This example is very quick :4 = 160 or more. About 150 measures if this kind. 1. Is it OK to use so high octave, without 8va? The line moves quickly between low and high notes: without 8va it is obvious the direction. 2. Is it OK to use that way cross-staff, or cross-...

Yes, correct. I think I will go with a symbol + explanation.

I might use B on the stem, as "bisbigliando" or similar. And of course I will give an explanation.

AFAIK, the slurs in vocal music covering one syllable is a common way to notate it. I think it is recommended in Gould. I guess that is because a slur means "don't take air!". Otherwise we would have tenutos, or separated phrases. I am not sure how it would sound without slurs... A good qu...

Thanks friends.
Any other proposal for
1. Single note irregular tremolo
2. Irregular tremolo between two notes?

Maybe just a description and frame-line?

Btw, Knut, do you have an example of Stok use of that symbol?