There is a striking feature of the twentieth century… the musical creation of the 20th century is qualitatively different from the 18th century, in that it lacks that immediate access or short-term access that was true of the past… I have no doubt that if we took two children of today two groups and taught one of them Mozart Haydn & Beethoven and the other Schoenberg and post Schoenbergian music, that there would be very substantial difference in their capacity to comprehend and deal with it, and that may reflect, and in fact if that’s correct it would reflect, something about our innate musical capacities.