She can silence a room with her voice or with a look, depending, which is reminiscent of a certain Nina Simone. Over the six tracks on the soundtrack for the documentary What Happened, Miss Simone?, Ms. Lauryn Hill is magnificent, perfectly channeling her predecessor. Just as comfortable with a driving flow as with a soul or R&B incantation, Ms. Hill was the high priestess of the Fugees, an essential 1990s hip-hop band. She is also, above all, the author of the brilliant and intimate The Miseducation of Lauryn Hill, and today she is celebrating that album’s 20th anniversary. On stage, her classics take an unpredictable and intense turn. In 2017, at the end of a landmark performance at the Montreux Jazz Festival, she offered the public two covers in honor of Nina Simone: “Feeling Good” and “Ne Me Quitte Pas”. We are still breathless.