Not so long ago I found myself listening with fascination to a radio piece by Tom Service in which he explained, as I felt to me personally, what had happened to serious music in the 20th century. I've always felt guilty that I have so little understanding of the work of so many celebrated composers, of whom Stockhausen is a prime example. Little understanding, and no love. Worse than that, I react with a dislike that is downright suspicious. Tom Service explained all to me. Stockhausen and others were attempting to free themselves from the stale grip of the musical tradition they had inherited, which, they felt, condemned them to repeat old patterns ad nauseam. They wanted to make new music, but found themselves trapped by the existing musical forms. Every arrangement of notes seemed to be no more than an echo of a composer from the past. Stockhausen's solution was to banish the very basis of melody itself: repetition. He ordained that in his work no note would ever be used more than once. At a stroke this put an end to what we had understood to be melody. One simple rule - no repetition - killed all patterns that, for example, begin and return to the same point.