Similar sound collage experiments had been made by Edgard Varèse in the 1920s but Varèse, also a French composer, wrote scores later played live by musicians.
Lignende lydkollageeksperimenter blev udført af Edgard Varèse i 1920'erne, men Varèse, ligeledes en fransk komponist, skrev partiturer der senere blev fremført live af musikere.