Home Milton Babbit in 1951 the first has mastered the most complicated synthesizer (the predecessor of a synthesizer of a series "Mark"), operated punched cards, radio companies R. C. A. On нeм it has carried out record of the composition "Ensembles". "This composition - tells Babbit - cannot be executed traditional tools because of complexity of timbres, rhythms, rates and modulation". Successful work of Babbita on a synthesizer, despite great difficulties tested by it, was of great importance - it has proved possibility of development of such devices and has involved new technical and composer forces in electronic music. Thanks to V.Usachevskogo's who has organised at the New York studio courses on studying technicians and methods of work with a new sound material efforts, ideas of electronic music have received in the country rather a wide circulation. It is enough to tell that now in the USA is 51 % of all studios existing in the world though by a recognition of the Usachevsky - "in view of considerable isolation of work of those years existing in 50th years in this area in America were considered a little perspective".