阿原，江易原，與時間賽跑的 おじさん (歐吉桑)進入人生下半場的阿原，心境也從「想得」，切換到「學捨 」
The music in the video that you misjudged as copyrighted. However, it is from this website, and it is in the public domain. Please check it carefully. https://en.wikipedia.org/wiki/File:Liszt-_sonata_In_B_Minor.oggBest, I-Yuan
