Hi, it is possible to use ensemble patches in Dorico and also to change from a "VSL Horn 1" tone in a "VSL Horn 2" tone by using different voices in one instrument.
First the way to use ensemble patches.
The steps in Dorico are:
- In Write mode: make a second voice in for example horn 1 (you can make an upstem-voice or a down-stem voice)
- In Play mode: select horn 1 and enable Independent Voice Playback
- In Play mode: assign the "6 horns VSTI" to the new track (track 2) of horn 1 by choosing the right VST (VEPro instance) and the right midi channel (of course make an instance of Synchron Player with the 6-horns VSTI)
- In Play mode: In the Endpoint Setup of the 6-horns track (track 2) choose the right Expression map for the 6-horns VSTI.
- In Write mode: the moment all horns play unison, do 2 things:
1. use the second voice of horn 1
2. select the unison notes of the other instruments and switch to "Suppress playback" in the properties panel in the "common" tab
In case of unison of e.g. horn 1 and horn 3, as you descibed above.
In the same way you can make a second voice in horn 3, and assign a separate Synchron Player instance with "VSL horn 2" to that second voice. If the different place in the venue of "VSL horn 1" and "VSL horn 2" is audible you can adapt the place of this "VSL Horn 2" instance a little in the Synchron Player. You can do the same with horn 5 (also a dedicated Synchron Player "VSL horn 2" instance).
If you have unison notes with e.g. horn 1 and horn 3, you can switch in horn 3 to the "VSL Horn 2" patch by using the second voice.
I hope this helps.