Jon Langford is a significant figure in the hard house and hard dance music scene, with a career dating back to the mid-1990s. He gained prominence through his various aliases, most notably Knuckleheadz, K-Series, and Mr. Bishi. His productions have become hard house anthems, characterized by driving beats and energetic rhythms. Langford's influence extends to collaborations and remixes with numerous artists, and his work has been released on prominent labels within the genre, including Tidy Trax. Beyond production, he has also had a long career as a DJ, playing in many clubs around the world. He has a history of playing in clubs in the south of england, and then moved to working in london. He has also played in many countries around the world.