In the 1990s, the music went to war—and it was carved directly into vinyl.

Episode 5 chronicles the rise of Underground Resistance (UR). Led by "Mad" Mike Banks and Jeff Mills, this collective donned masks to declare independence from the corporate music industry.

But behind the masks, there was Ron Murphy of National Sound Corporation (NSC). We tell the story of the legendary mastering engineer who helped invent the "Locked Groove" and gave Detroit Techno its notoriously loud, heavy sound.

From the sonic warfare of UR to the mastering lathe at NSC, this is the story of how Detroit built its own industry from the ground up.

Key Figures: Mad Mike Banks, Jeff Mills, Ron Murphy, Carl Craig.

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