If you put in the effort to include the measure number(s), that would be very helpful for your readers. It also lets us know that you invested the time to count it and it puts your readers in a better thought to help you. Considering that there are over 90 measures, "modulates the theme to D minor" is not very helpful for most people nor do "chromatic nonsense".Anyway, do you mean m37 and onward?If you are depressing each key and leaving it there until the next one is depressed (attempting legato) then this may be the problem. Release the 2 as your hand shifts to depress with the 1. This should solve any joint issues due to the stretched tendon as your left wrist is bent when you reach to the middle register of the keyboard.