If I use Noteperformer 3 in Dorico, I just see 1 (the first) Channel in the Dorico Mixer… But I would like to see every instrument I use. (i.e. With Halion 6 I see all channels directly…)
Noteperformer uses its own mixer, which you can access here:
I assume it’s because Noteperformer performs some internal computations in its own engine to give a “smarter” playback. There’s not a way to get these individual instrument channels to display on the main mixer.