Over the years, the need for a new edition of Mahler's Symphony No. 2 became apparent for several reasons. First, many new sources for this work have become accessible since 1970, when Erwin Ratz completed the first critical edition of this symphony, the most significant being Mahler's personal reference score in which he recorded changes to be made (his last entries were made in September 1910). The second reason was the significant strengthening of the editorial standards of the critical editi...