PJ Belcher is the owner and operator of PJ Belcher Pro Audio, a freelance Sound Design and Music Audio Production company for games, based in Cambridge, UK. He first started looking at different user interfaces (UI's) and their application in real-time music performance when he noticed the potential of the iPhone. This led to the development of an interactive music system designed for the iPhone based on it's unique UI's. This allowed PJ to develop a broad knowledge of the iOS devices and what effects it has on audio design. Since then he has worked on audio for iPhone in a variety of projects, utilizing the skills and information he has establised.