What's the reason for all the fuss about soprano Maria Callas, whose life story is like a study in Greek tragedy? Her great gift was not purity of tone or emission, reliability, or sheer loveliness; it was, rather, her ability to change her vocal color and style to suit not only particular periods of opera but to get under the skin of the individual characters she portrayed: Bellini's priestess Norma performing a sacred rite; Puccini's sweetly hopeful Mimà from La Bohème and his innocent Butterfly; Verdi's courtesan Violetta; Bizet's sultry, adult Carmen; Donizetti's raving Lucia, and many others--and you'll believe them all. Much--though not all--of the program is identical to the 1993 anthology La Divina, though there has been some remastering since then. It's a perfect way to sample the art of Callas and begin to understand why, decades after her death, she remains one of the opera world's most revered performers. --Robert Levine