Pierre Schaeffer was a French composer and a pioneer of electronic music. While working at the French national radio (Radiodiffusion Française), Schaeffer began experimenting with real-world sounds recorded on magnetic tape, pioneering a genre now known as musique concrète. In works such as Étude
Canadian art couple working in sound an multimedia installation. Cardiff first came to notice with her audio walks. Sound has remained an important part of their practice with pieces such as "40 part motet", which consisted of 40 speakers each playing a different voice.