Strauss's first tone poem distinguishes itself from all other subsequent orchestral compositions in its existence in three different versions. Even among the operas and other compositions in his hand there is no other work with a comparable history of origin and publication. What is more, the final version of Macbeth is the only valid form of the work and the only variant with further sources (cf. Critical Report) in addition to the autograph score. In contrast, the second version has only been ...