@@mastermangdqusai You don't need to trace the lines of drug notes obediently. As long as you touch each point of the drug notes, it will be a perfect judgment no matter how you move your hand.
This time, I was playing with the condition that I would use only my index finger as much as possible. If there are no conditions, even if it is on the iPhone screen, I will basically hit the outside of the screen with my middle finger as usual.
