Awesome! I wish there was something similar for the Netherlands.

Would you be interested in forking it for Netherlands yourself and maybe divide the work between your peers to get it up and running? :)

This is probably not what you are looking for, but for beginners visiting this page. This website gives you a nice start and shows how old hits can be played: https://learningmusic.ableton.com/

I would suggest "The Algorithm Design Manual" by Skiena. It helped me a lot.