Today I went to Nagwon Musical Instruments Arcade located at Nagwon-dong, Seoul for surveying the price of guitar which my son wanted to buy. At the corridor of 2nd floor an old piano tuner was tuning the piano. I started to sketch him. How complicated the inside of the piano was! I asked other piano tuner how the expense for the tuning was. He said it would be 80,000 to 90,000 won.