He's done over a hundred original station jingles.[2] Many of the Yamanote Line jingles are classics, though.
Someone in Japan will surely be indignant about the all the lost revenue from people who are not buying a CD full of train station jingles.
I'm surprised copyright trolls are not buying IP from defunct game/film/music companies and suing youtubers left and right for uploading video game music and anime OSTs.
If I were a sociopath and didn't care how I make my money, I draft some legit-looking legal threat letter template demanding $10,000 to avoid a civil lawsuit worth millions, fill in the blanks with a name, IP address, and title of pirated content, then mail out the letters by the tens of thousands using USPS-subsidized cheap mail.
If you mail out about 20k of these threats, you only need 3 of them to pay up to come out on top.