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.
GRE作文满分机经分享
GRE作文argument范文分析
2014年GRE写作要点
几大句型为GRE作文加分
GRE作文范文:科学的作用
GRE作文范文:成功
GRE作文范文:呼吁孩子阅读
2014年GRE写作模板介绍
如何写GRE话题作文?
GRE作文话题整理
如何拟定GRE写作大纲
GRE作文考试经验
新GRE作文:哥伦布
GRE作文素材:亚里士多德
关于法律的GRE作文
GRE作文范文:艺术价值
GRE的写作篇幅要求
2014年GRE填空题步骤分析
GRE作文逻辑结构是什么?
GRE作文备考:有的放矢 充分准备
新GRE作文素材:欧文
新GRE作文句子
2014年GRE之满分写作
GRE作文技巧
让GRE作文出彩的方法技巧
GRE作文:Issue+Argument关键在哪
GRE作文高分技巧
怎么增加GRE作文词汇量
GRE写作素材积累
GRE作文提纲指导(11)
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |