Christoph Kemper is a German engineer, inventor, and entrepreneur whose innovations have profoundly shaped modern music technology. As co-founder of Access Music in the 1990s, Kemper led the development of the acclaimed Access Virus synthesizer, a virtual-analog instrument celebrated for its distinctive sound, deep modulation capabilities, and reliability. The Virus quickly became a defining tool for electronic, industrial, and pop musicians, helping establish the sonic character of contemporary electronic music.