Journalist, music and literary critic at the Nouvel Observateur, Sophie Delassein is passionate about French song. She has written biographies, such as those of Barbara (Rappelle-toi Barbara), Maxime le Forestier (Né quelque part) or Mathieu Chédid. She has also written a biography of Françoise Sagan (Aimez-vous Sagan?) and more recently a biography of Georges Moustaki La Vie avec Moustaki.