These days, “Your Mama’s Talkin’,” a song from Chicago-based blues scion Shemekia Copeland’s 1998 debut album, Turnin’ Up the Heat, has taken on a whole new meaning. Copeland became a parent in 2016, and when she isn’t wrangling her “little man,” she says she’s thinking about “the type of world I brought him into, and my concerns for him and what he will have to face.”