Improve the coherence of the text: Deriving from the heavy metal genre's roots in blues music, sex is another important topic -- a thread running from Led Zeppelin's suggestive lyrics to the more explicit references of glam metal and nu metal bands.
Sex derives from the heavy metal genre's roots in blues music. Sex is another important topic -- a thread running from Led Zeppelin's suggestive lyrics to the more explicit references of glam metal and nu metal bands.