"...mighty powerful medicine." Irma Thomas, the reigning Soul Queen of New Orleans, has a voice as marvelous as any on this earth, and when she connects with an audience, she'll put a song across like you've never heard it before. That's precisely what happened on two summer nights in 1990 at Slim's in San Francisco. Here are compelling versions of many of Irma's classics, along with a few surprises. 1992 Grammy finalist.