Back in the early ‘00s, Nashville-based Baby Stout served up an intoxicating (if peculiar) gumbo of Dirty South rap and garage rock to a regional cult following. The quintet’s music is documented on The Terrible Threes, a sometimes zany, often confrontational release built around charismatic front woman Rebecca Stout. Switching between rapid-fire raps and retro-soul singing, Stout holds forth as Asher Dudley delivers thick-cut guitar riffs, Pete Cummins lays down snaky bass lines and human beat-box Cameron Davi adds vocal punctuations. An obsession with addiction — to drugs, sex and/or power — runs through these songs, adding a nasty kick to “The Lyrical Vampire,” “Svengali,” “Stupid Cupid” and similar tracks. Stout rips into psychic bloodsuckers in “Down, Down,” embraces her inner criminal in “Cowboy” and raps out her own personal story in “Art of Rapistry.” Baby Stout’s brand of hip-hop grunge is surprisingly flexible, able to switch from frantic punk outbursts (“Poor Pitiful”) to throbbing, fuzzed-out jams (“Some Blood”) without strain.