While trying to learn how to play a difficult piece, I realized that I had trouble keeping track of multiple notes and however long they are suppose to be depress.
There can be at most 10 notes (5 for each hand, not counting arpeggiated chords) written on the grand staff for a single beat but each note can have its own rhythm which complicates things. Then for the next beat, you have to consider the duration of each of the notes in the previous beat and then read the notes (which has a possible count of 10) in that beat and then consider their duration. In the third beat, the problem is threefolds, etc.
Is this the difficulty in trying to learn pieces that are beyond my level or is there something that I've missed that enables people to keep track of things easily? If the problem is the former, can I expect this problem to be part of the challenge of reading music?
I thought of a way to get by this problem: playing selected notes on a single clef through the measure, then redoing this process but with the notes that I had omitted in the previous run through, and then do a run through but including all notes. Do professional pianists at one point do this to learn to read? (I'm teaching myself how to sight read).