industrial
A genre of music incorporating heavy lyrics into machine noises started in the mid-1970's and continuing through the late 80's and early 90's. This genre of music has branched into other forms such as Nu-Metal, Electronic Industrial, etc., but all retain the essence of the original machinery and heavy guitar riffs.
Started by bands mentioned above, revived by Ministry's 'The Mind is a Terrible Thing to taste', which introduced both the band and industrial into mainstream music and carried on through the 90's by NIN, Filter, Fear Factory, Rammstein and many others.
By D.C.