Home Further composers of these schools всe more and more a steel to suppose introduction of stochastic elements, and in the mid-seventies the brightest representative of electronic music of Germany (K.Shtokhauzen) пришeл to almost full импровизационному to a method which record was carried out by signs "+" and "-". Electronic music developed in the USA simultaneously under the influence of idea "Кeльна" (the studio where Shtlkhauzen) and P.Sheffera's concrete school works and is connected with V.Usachevskogo and O.Ljueninga's names. Originally as a material for their compositions served денатурализированные acoustic elements of usual performing tools. However by the end of 50th years when composers have come to the New York studio of electronic music Milton Babbit (1916) and R.Seshens, they began to use sounds of the artificial nature, and M.Babbit has concentrated the efforts almost exclusively in the field of designing of timbres.