JWP is one of Poland's oldest and most prolific hip-hop acts, closely affiliated with the graffiti and skateboarding community. For the past 20+ years, their annual birthday celebration has drawn hundreds of fans of the urban culture to the capital city. The anniversary concerts always featured an array of both local and international guests, including Sean Price, Hemp Gru, Sokół, Włodi, Pro8l3m, Quebonafide, Miuosh and Paluch.
Musical activities aside, the daytime part of the event is always rich with cultural happenings. In the past years, it hosted a number of art exhibitions, and even the release of a collectible zine "SickWell", documenting the band's extensive travels around the world.