This 术语 is 联合 with 各种各样 形式 of 音乐 that have focused on 噪音 as its key 声音 品质 In the early 20th century 噪音 was a focus of some 作品 by the 未来主义者 and Dadaists More recently it became a key ingredient of the 音乐 of many 朋克 音乐家 Today 使用 the 术语 噪音 音乐 as a 类别 描述 their 作品 Many of these 艺术家 are 联合 with 电子 and 使用 噪音 as their 主要 源 材料 音符 不 all 噪音 音乐 has to be 响 Organised 声音 This is the 术语 采用 by the 作曲家 Edgard Varèse [in the 1920s] to 描述 his 音乐 His 使用 of this 术语 reflects in 特殊 his insistence on the 音乐 潜力 of an expanding ‘palette’ of 可能 声音 for 使用 in the concert hall in 特殊 new kinds of 打击乐 电子手段 生成 声音 and 录制 声音 The 术语 is often cited in 试图 to 定义 音乐 and anticipates the 概念 of 音乐 as a ‘plastic’ 艺术 形（曲）式 [Landy 2007a 10]