A tuning the piano doesn't mean it doesn't leak. Air leakage doesn't mean a broken piano. JJ, there are different opinions about this piano, but one thing is certain: this is a pure blues piano, and its tone is very good, and it is blue.

As for the sound of airflow, it's normal. If you don't like it, you can choose some Suzuki pianos or Bao Tong pianos. The Japanese piano is bright and has no air leakage.

In terms of mouthpiece, each piano is a little different. JJ piano belongs to Horner's MS series, which is different from SP20. Of course, there are also some mistakes. If you can persist, you will know what is small when you open the piano 1896 later.