n.即兴创作；即席演奏
The other key aspect of jazz is improvisation. 爵士乐的另外一个重要因素就是即兴创作。
He is also credited with making improvisation a more central part of jazz. 让即兴演奏成为爵士主流也要归功于他。
But improvisation does not mean just playing any old thing that comes to mind. 不过，即兴演奏并不是随便想到什么就演奏什么。
adj.即兴的
