These progressive musicians created a music without rules. They used rock, jazz and European classical together to create a harmonious whole that transcends borders and styles. Prognotfrog
![](https://jazzinfo.org/wp-content/uploads/2022/01/confluence-20121223145227.jpg)
These progressive musicians created a music without rules. They used rock, jazz and European classical together to create a harmonious whole that transcends borders and styles. Prognotfrog