随着二十世纪五十年代前后各类新音乐流派的出现,一些奇特的记谱法也纷纷问世。最早创用的可推约翰·凯奇为代表的美国先锋派作曲家,演奏者依据他设计的一些标记作自我发挥,成为“偶然音乐”。六十年代以后,各种新奇的记谱法比肩继踵地登上乐坛。它们大致可分为三类。第一类,仍在五线谱上记录各种符号;也有的则是电子乐器的演奏符号标记。附 With the advent of new genres of music around the 1950s, some fanciful notations were published. The first pioneer American composer, represented by John Cage, is based on some of the markers he has designed to become “accidental music.” Since the 1960s, all kinds of novel notations have been booming to the music scene. They can be roughly divided into three categories. In the first category, various symbols are still recorded on the staff notation, while others are symbols of performance of electronic musical instruments. Attached