Greetings. I was surprised myself that I would come across some ska music in the middle of the countryside of Japan. But these ska/jazz groups seem to be growing across the country. It gives them a chance to make jazz appeal to a younger audience.
Desorden Público, sounds interesting. I shall check them out. You should make a post about them in the Reggaejham community . We are not a huge community and don't have major curation bodies backing us but curators look into the community for quality content.

Have a good week ahead dear.