(1) Dickens, writing serially to the month as he did, clearly left much to his powers of extemporization .(2) These tunes go back to the very heart of extemporisation ; the very root of Jazz itself.(3) At the premiere Handel gave an organ extemporisation on the fugal subject taken up by the choir.(4) It could be a fine place to eat if the kitchen could curb its fondness for off-the-cuff extemporisation and submit itself to less glamorous, but more thorough culinary discipline.(5) When he was playing, the sound of his jazz masked the noise in his ear; when he was resting, the noise in his ear provided a convenient backing for mental extemporisation .