@Comrade I have recommended Ketron soundbox elsewhere on this list, and tin whistle and many other flutes are there, here is the EWI USB version. Sylphyo will be similar.
https://youtu.be/DnsQQbMFS7o
Wlodek

It would be great to have such ancient flutes in stand-alone version, beautiful sounds:
https://www.suonopuro.net/virtual_ancient_flutes_en.html?i6s153

Unfortunatelly I will not get full Kontakt software to install them.

@friedus Check my page, no video but many examples of Ketron SD2 and SD1000 with Sylphyo and EWI Akai.
http://www.is.umk.pl/~duch/prywatne/Fjukawka/index.htm

A step towards faster program change would be to assign individual parameters to each MIDI channel, for example base key and voice selection. I find myself changing from C3 to C4 quite often when changing voices on my synth. This takes much more time than just changing MIDI channel.

Any information on voices on the receiver?

I have found an intersting PhD thesis on EWI Akai; this may be helpful also for Sylphyo players as it contains some details on MIDI, notation and blowing techniques.

Matthew J. Vashlishan, University of Miami,
The Akai Electric Wind Instrument (EWI4000s): A Technical and Expressive Method.
https://scholarlyrepository.miami.edu/cgi/viewcontent.cgi?article=1577&context=oa_dissertations

Combination of Sylpho with Ketron sound modules is quite easy to use and has 4 banks with 128 voices each. You can control it directly from Sylpho or via computer with MIDI-OX, a simple program that can control Ketron and other MIDI synth, quickly select your favorite voices and assigns parameters like chorus or reverb to different MIDI channels. After trying many large DAW programs I gave up - too complicated and not doing what I need. MIDI-OX solves the problem. You need to use instrument definition for SD1000, link is on my page.
http://www.is.umk.pl/~duch/prywatne/Fjukawka/index.htm

See Sylphyo on Ketron SD 1000 for samples: Mission Latin Flute | Mission Pan Flute | Mission Oboe. I will add more examples but I have plenty of links to Akai EWI on Ketron that will give you an idea how it sounds. I have Yamaha VL70m with Patchmen's chip, but Ketron sounds much better. A pity their manual ans software support is so poor, but with Sylphyo new firmware and MIDI-OX it works perfectly.

It would be useful to link base key to particular voices; now I need to change it for some instruments, for example going from saxes to flutes.

@wlodzislaw With new firmware setting MIDI program change to send bank info works great with Ketron! Initially I have reversed MLB/LSB, so nothing happens but now I can access all banks and voices.
Thank you, this is very useful and allows the use of Sylphyo without computer.

Let me second that suggestion; quick change of selected voices would be very useful, especially during live gig.
Wlodek