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 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 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 for 使用 in the concert hall in 特殊 new kinds of 打击乐 电子手段 生成 声 and 录制 声 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]