This shows the first two bars of Schumann posthumous variations V.
Look at this music note (red-squared), I am curious to know why Schumann chose a natural G instead of the original flat G in this original D-flat major (or B-flat minor) piece?
It sounds a bit abrupt to me that Schumann chose a natural G for this music note (red-squared). So I hope that there is a wise explanation/interpretation? (Please feel free to give me some comments/pieces of advice/background educations on this piece.)