Drum 'n' Bass/(鼓与贝斯) -> Genres and Categories [G&C]/(风格与流派)Drum 'n' Bass/(鼓与贝斯) -> Genres and Categories [G&C]/(风格与流派) -> #[Tier 2] Practical Aspects for Composers/([第二]实践层为曲作者) -> Users Group/(用户群)