24.Piano
The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries --- the spinet, the dulcimer, and the virginal. In the seventeenth century the organ, the clavichord, and the harpsichord became the chief instruments of the keyboard group, a supremacy they maintained until the piano supplanted them at the end of the eighteenth century. The clavichords tone was metallic and never powerful; nevertheless, because of the variety of tone possible to it, many composers found the clavichord a sympathetic instrument for intimate chamber music. The harpsichord with its bright, vigorous tone was the favorite instrument for supporting the bass of the small orchestra of the period and for concert use, but the character of the tone could not be varied save by mechanical or structural devices.
The piano was perfected in the early eighteenth century by a harpsichord maker in Italy . This instrument was called a piano e forte , to indicate its dynamic versatility; its strings were struck by a recoiling hammer with a felt-padded head. The wires were much heavier in the earlier instruments. A series of mechanical improvements continuing well into the nineteenth century, including the introduction of pedals to sustain tone or to soften it, the perfection of a metal frame, and steel wire of the finest quality, finally produced an instrument capable of myriad tonal effects from the most delicate harmonies to an almost orchestral fullness of sound, from a liquid, singing tone to a sharp, percussive brilliance.
高中英语语法-定语从句常见错误例析
高中英语语法-“ It is……”句式归纳之一
高中英语语法-NMET 名词性从句考点归纳之一
高中英语语法-高频率介词搭配之四
高中英语语法-巧解完形填空有新招之一
高中英语语法-学习定语从句的三个切入点
高中英语语法-高频率介词搭配之二
高中英语语法-小议It is + time + clause
高中英语语法-非谓语动词的四项内容和三种关系
高中英语语法-“ It is……”句式归纳之二
高中英语语法-短暂性动词用法全解之二
高中英语语法-ing形式作状语用法四注意
高中英语语法-高频动词操练之二
高中英语语法-浅谈分隔同位语从句
高中英语语法-定语从句“对比”练习
高中英语语法-利用 and 巧解题
高中英语语法-谈谈让步状语从句
高中英语语法-辨几组相似的从句
高中英语语法-名词和冠词50题之二
高中英语语法-限制性与非限制性定语从句四区别之一
高中英语语法-同音词“一句通”
高中英语语法-短文改错策略初探
高中英语语法-“特殊”的连词
高中英语语法-倒装句的用法
高中英语语法-透视“吊尾介词”用法
高中英语语法-名词和冠词50题之三
高中英语语法-NMET 名词性从句考点归纳之二
高中英语语法-短暂性动词用法全解之一
高中英语语法-V-ing形式作状语小结
高中英语语法-插入语的应用之一
| 不限 |
| 英语教案 |
| 英语课件 |
| 英语试题 |
| 不限 |
| 不限 |
| 上册 |
| 下册 |
| 不限 |