text: Add the shrill vocals of former Sex Pistol John Lydon , and the result is Leftfield 's hectoring . Drench a track in shadowy atmosphere , and the result is the ominous soundscape of Tricky 's . Combine ' 50s space music , French pop balladeering , and Marxist catch phrases , and the result is such Stereolab confections as . Transpose the cyclical rhythms of dance music ( and work by minimalist composers like Steve Reich ) to guitars , and the result is the hypnotic disorientation of My Bloody Valentine 's . Include reggae rhythms and quotations from Indian and Arabic music , and the result is the ethno-techno of Loop Guru tracks like .
  
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  Mixing music genres together seldom produces anything of value .