I started using voice colors after resisting it. For me the solution was to make voice 1 BLACK. That way I could see more quickly see when I had written a passage in a lower voice accidentally - but not have my score look like a rainbow flag.
But I was surprised to find that the up-stem notes in the lower staff of a piano start at voice 3 and the down stem notes are voice 4. So my piano’s lower stave can never be in the primary up-stem voice (voice 1.)
I understand the reasoning here - it is a single instrument for making sound. But in everyday use the notation is more like two instruments since 95% of the time it’s corresponding to two hands.
Would it be possible to allocate the voices on the two staves differently so they both could be in the primary up-stem voice (voice 1) at the same time?
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Also - While composing and sketching I find that the playback of dynamics cannot be different on the two staves of a piano - if I’m in a mp passage and add a f marking to the lower staff, the upper staff plays back at f as well. Not sure this is a case that many would want solved (playback of different dynamics from the same piano instrument.)
So for my sketch work I made a single staff piano and am working with three of them bracketed together. This way I can have separate dynamics and they can all in be in voice 1. They all go to the same VST using different MIDI channels, and the VST is set to OMNI.