In this article, the author presents an analysis of the relationship between Pierre Schaeffer and the musical avant-garde of 1953, with particular reference to Pierre Boulez and to Schaeffer's shift from musique concrète to recherche musicale. The main source is Schaeffer's 'Vers une musique expérimentale'; extensive excerpts are translated here into English. The antagonism between the Paris and Cologne studios is discussed in the light of two different approaches to technology and tradition; for the exponents of elektronische Musik new technology was a means to perfect Western music, while for Schaeffer it was simply a means to make new musical discoveries.