Even though he debuted in the underground realm of horrorcore and seemed destined to be a future footnote, rapper Tech N9ne grew to become an indie rap superstar. In the process, he built his Strange Music label into a Psychopathic Records-styled empire with an accompanying loyal fan base. When it comes to influence, Tech has arguably topped underground trailblazers Insane Clown Posse thanks to collaborations with mainstream artists and a style that evolved from horrorcore to hardcore and confessional. Issuing a quartet of Top Five albums in the early 2010s -- All 6's and 7's,...