Industrial metal is a heavy metal musical genre that draws from industrial music and many different types of heavy metal, using repeating metal guitar riffs, sampling, synthesizer or sequencer lines, and distorted vocals. Founding industrial metal acts include Ministry, Godflesh, and KMFDM. Industrial metal's popularity led to some criticism from other artists associated with the industrial scene. Subsequently, it is most well known in various European permutations. Industrial metal groups have produced many acclaimed music videos.