The portion of a 轨 in which all the 乐器 drop out except the drums Using two copies of the same 录制 DJs often extend or 循环 these portions to 形（曲）式 the 节奏 基础 of new 轨道 Often used to 描述 the variety of 音乐 that make 使用 of breakbeats e g HipHop TripHop and 鼓与 'n' 贝斯

源 – Cox C and Warner D 2004 音频 Culture Readings in 现代 音乐 连续统一