While punk rock was always supposed to be about pushing the envelope, few post-punk bands seemed willing to go quite so far to creatively confront their audience as Big Black. The group's guitars alternately sliced like a machete and ground like a dentist's drill, creating a groundbreaking and monolithic dissonance in the process. Their use of a drum machine, cranked up to ten and sounding a tattoo that pummeled the audience into submission, was a crucial precursor to the coming industrial music scene while creating a sound that was far more challenging and organic than what g...