Mariza Live in London:  Every year I get my Uncle Ralph and Aunt Rona something by a world music diva.  They liked Brazil’s Virginia Rodrigues and French-Mex gypsy Lhasa, but the biggest hit was a disc by Mariza, who sings Fado, the traditional folk music of Portugal.  With a voice that has to be heard to be believe, Mariza pours out her heart in every tune.  This collection has an added attraction: a DVD that allows for a view of the tall, visually stunning singer.