Beginning in 1999, Smoked Out Music began compiling many of Three 6 Mafia's previously released underground mix tape recordings as Triple 6 Mafia on the multi-volume Underground series. These tracks were originally released regionally back in the early '90s, predating Triple 6 Mafia's name change to Three 6 Mafia in 1995. As such, the tracks are very lo-fi and uncompromising, even for Three 6 Mafia. It's perhaps most interesting to hear how the Memphis group would later reprise elements of these recordings. The third volume, Kings of Memphis, features such underground favorites as "Fu*k What U Heard," "M.E.M.P.H.I.S.," "Da Summa," "Grab tha Gauge," and "South Memphis B*tch." If you're new to Three 6 Mafia, these Underground compilations aren't the place to initiate yourself; however, longtime fans curious to investigate the group's beginnings should find these recordings of particular interest.