早期丛林舞曲（Oldschool Jungle），或简称丛林舞曲（Jungle），是一种融合了包括碎拍硬蕊和雷鬼／Dub／舞场雷鬼等其他类型的电辅音乐。它是被统称为「丛林音乐」的一个亚种。高速（150到170bpm）的碎拍与高度切分的打击乐片段，以及采样和合成效果的大量使用是丛林舞曲最易识别的特点。小鼓滚动（rolling）也十分常见。

尽管两种音乐派别是否相同受到争论，丛林舞曲和鼓打贝斯两个词经常被交替使用。有人认为鼓打贝斯是在九十年代中期从丛林舞曲中分离出去的一个类型。制作人以分离碎拍（最著名的为艾门碎拍）的方式创作出通常不合拍的鼓点串行。丛林舞曲制作人融合了经典牙买加／加勒比的伴音系统制作方法，厚重缓慢的低音线与简单的旋律（类似于雷鬼／Dub／舞场雷鬼）在制作过程中被强调处理，赋予丛林舞曲“滚动”（rolling）的特点。

Jungle (sometimes oldschool jungle), is a genre of electronic music that developed in England in the early 1990s as part of rave music scenes. The style is characterized by fast tempos (150 to 170 bpm), relatively slow and lyrical reggae-derived basslines, breakbeats, and other heavily syncopated percussive loops, samples and synthesized effects make up the easily recognizable form of jungle. Long pitch-shifted snare rolls are common in oldschool jungle. The terms "jungle" and "drum and bass" are often used interchangeably, although whether the two genres are actually distinct is an ongoing topic of debate. For those individuals who consider the two genres as separate entities, drum and bass is usually considered to have departed from jungle in the mid to late 1990s.