Following the orchestral enterprise of 2000’s Both Sides Now, Mitchell’s latest album, a two-CD set that encompasses 22 songs taken from the full span of her 34-year career, employs a 70-piece orchestra plus a number of top-flight jazz soloists in support of her voice. The arrangements, by longtime collaborator Vince Mendoza, are ambitious and richly textured producing work that rewards repeated listening. Although there’s no explicit valedictory aspect to this project, there’s a melancholy sense of a whole era passing away in these reflective performances.