In the page's words:

The WüRG, the Wülfrath Rock Musicians' Community, is an association of (rock) musicians and non-musicians from Wülfrath and the surrounding area (Mettmann district). Its main purpose is to network the Wülfrath music scene and activities. In addition, the WüRG has been organizing an open air festival for 20 years now, which is well known beyond the city limits.