After an employee played some nasty distorted elec guitar with fellers screaming & called it "Blues," I took it upon myself to educate my employees. The first recording I played was Muddy Waters alone at the piano. I proceeded to play several recordings for them in the coming days, none of which were more recent than 40 yrs ago. They were stunned at the sound of the real thing, Baby! They also learned that they previously knew absolutely nothing about Blues.