That voice stopped you in its tracks. It recalled Billie Holiday a bit, sure, coming from high in the back of her throat, piercing the ear a little, but wasn't really it. Her music was up-to-the-minute jazzy hip-hop R&B, but her voice sounded ancient, with a splash of Northern hipness and a twist of Southern comfort. It was Erykah Badu, from Brooklyn via Dallas, her head wrap tall and tight, singing of knowledge and philosophy and fulfilling unrequited love in the next lifetime. She was the sister-in-music of D'Angelo and Lauryn Hill, the Earth Mother of Nineties boho soul.