These days, buying a ticket to a Lauryn Hill concert is basically like buying a lottery ticket-you're either going to end up a little more broke and a little more bitter than yesterday, or you're going to strike gold. No question, Ms. Lauryn Hill is volatile. Her tours from recent years are littered with scathing reports of her chronic tardiness, distant affect, and inscrutable renditions. Reports from this tour have been somewhat mixed, but in general one of the greatest artists of the '90s has returned to form. She was certainly there in Denver.