I'm learning the piano and my teacher always says to me: "just focus on the melody, sing it in your head, and voicing and phrasing will go along", which works greatly as long as the piece is a mix of bass/accompaniment/melody.
When I do that I can maintain good phrasing in the melody, and with pratice, I can also keep somewhat keep track of the phrases present in the accompaniement/bass.
In addition, I recently read somewhere that some people have the capacity to follow multiple melodies at once (up to something like 9, I believe), and I don't recall if this is something that you can train or not.
While playing fugues, in order to maintain good phrasing on all voices at once, do pianists rely on hear (and focus on all voices) or is it just a matter of pure muscle memory ? Perhaps it is a mixture of both, in which case the pianists switch their attention rapidly between voices depending on their needs, and put the others on autopilot meanwhile ?
I find myself doing the latter a lot, but of course fugues bring things to a whole new level, and it might not be satisfactory enough to proceed like this, hence my question.