The fourth and final volume of Donald Mitchell's studies of Mahler and his music fills the remaining gaps in the scrutiny of Mahler's works in the series, principally the Fifth, Sixth and Seventh Symphonies, with the Ninth and Tenth. A striking feature throughout this collection is the examination of the revelatory role of the performer; this is epitomized in transcripts of significant conversations about the Fifth and Seventh Symphonies with, respectively, Riccardo Chailly and Bernard Haitink