周围 樂/乐 is a very calm atmospheric 种类 of 樂/乐 that often 包含 no perceptible 拍（音）

It arose at the 时间 of the New 波 动作 that was 影响 by meditation practices from India

It makes 用 of 声波 质地（纹理、织体） to 创作 an 环境 of 声波 often involving a subtle mood and can be 已有 in so-called ‘chill-out rooms’ in some clubs

It should be able to be enjoyed if you want to 听 or ignored if you do 不

樂/乐 To Float In
The goals of 周围 樂/乐 are to 创作 an atmosphere that blends with the 自然 环境 环境 创作 a calm 空间

Brian Eno one of the pioneers of 周围 樂/乐 描述 it as

“music to swim in to float in to get lost inside”

周围 樂/乐 发展 in the 1970s as synthesisers became available These 乐器 allowed composers to experiment with long and slowly 移位/偏移 声波 质地（纹理、织体）

周围 Music
This is an 周围 style 作品 'pjanistic' pronounced pianistic by Thierry Gauthier

What does this 樂/乐 involve?
周围 樂/乐 通常 focusses on 音色 / 声波 品质 rather than 节奏 or gestures

It is 通常 最小 designed 不 to draw attention to itself

Often it seeks to completely enfold the 听众 and to 探索 a 感觉 of 空间

作曲 Tip
Common manipulations 技术 in 周围 樂/乐 might be

延迟 – can be used to duplicate 声 and to 创作 loops asymmetric or irregular 延迟 might be especially interesting

声像 – can be used to spread 声 across the 空间 between left and right enveloping the 听众

混响 – could be used to provide a 感觉 of 声 in 空间 and to place 声 further away more 混响

时间缩放 – could be used to extend 声 and to 创作 interesting 质地（纹理、织体） which could then be layered panned and have 延迟 or 混响 applied to them

Reference
Cox C Warner D 2004 為耳/音频 Culture Readings in 现代 樂/乐 连续统一 New York