https://www.worldmusictextbook.org/

The World Music Textbook is a new collaborative effort to create a free and broadly accessible resource for the general public, educators, students, and researchers alike. Its open collections of scholarly, peer-reviewed writing and multimedia materials focus on increasing access to underrepresented voices, writing styles, and audiences, all with undergraduate students and a broad readership in mind.

We have a post in the News section with some detail about our tech stack, which is all based on free/free tier services. One of the big goals is to make something reproducible in a way that provides value to readers and authors alike. That's not an easy task in the world of academic/educational publishing!

Any comments welcome. HN folks may also enjoy the Rhythm and Expectation article, which includes some interactives using ToneJS. Maybe that's worth a different post.