Born in Montpellier in 1929, Greco was classically trained at the Paris Opera as a youngster. Forced to flee Paris at the outbreak of the Second World War, and practically orphaned when her mother was jailed for her resistance to the Nazis in 1943, she then sought refuge with her former French teacher in the St. Germain des Pres quarter of Paris. Greco made an acclaimed debut as a singer in 1949, premiering songs penned for her by such leading writers as Jacques Prevert ("Les Feuilles Mortes"), Jules Lafforgue ("L'Eternel Feminin"), and Raymond Queneau ("Si Tu T'Imagines"), set to music by Joseph Kosma. In the new post-war songs, lyrics were privileged over the bigger orchestrations favored by singers like Edith Piaf and Greco's intellectual bent made her the perfect interpreter for this new movement. Her singing style shared the dramatic enunciation of Jacques Brel and the droll delivery of Georges Brassens, her contemporaries in quite different musical scenes, while showcasing a sensuality all her own. Greco released the song "Je Suis Qui Je Suis," again written by Prevert and Kosma, two years later which was a huge hit for her. Having toured Brazil and the United States, Greco returned to Paris in 1954 to triumph at the Olympia hall, with the song "Je Hais les Dimanches," written by a young Charles Aznavour. Devoting most of the rest of the decade to a successful film career in the United States, Greco returned to Paris in 1959 and began a second phase of her musical career as the patron of a new French generation of songwriters in the early '60s. She collaborated with artists like Serge Gainsbourg, who wrote "La Javanaise" for her, as well as Leo Ferre and Guy Beart. Greco embarked on a third stage in her career in 1975, collaborating closely with Gerard Jouannest, the former pianist for Jacques Brel, who set many of the texts written for her to music henceforth. She married him in 1989. Further releases in the '80s saw her experimenting still, and promoting new songwriters, like Etienne Roda-Gil and Caetano Veloso. In 1998 she released "Un Jour d'Ete et Quelques Nuits," and in 2004 her album Aimez-vous les uns les Autres ou Bien Disparaissez was a real return to form, featuring collaborations with young artists Miossec and Benjamin Biolay.