The Unknown Callas The Greek Years Author:Nicholas Petsalis-Diomidis In this award-winning biography, Petsalis-Diomidis closely examines Maria Callas's life in Athens from 1937 to 1945. These years have been largely absent from previous works about Callas, but were crucial to her professional and personal growth. The author examines her professional development, her studies, her concertizing, and her work with th... more »e Greek National Opera. He also recounts Callas's daily life, her friendships, her rivalries at the conservatory, and her personal life. Though it is a detailed historical biography, the writing and pace are novelistic. HARDCOVER.« less