 In 1856 the libretto of "Siegfried" was revised and a new ending was devised for "Götterdämmerung" – the so-called .When Wagner came to compose "Siegfried", he made three significant alterations to his "modus operandi".Firstly, he wrote (in ink and on at least three staves) a developed draft between the preliminary draft and the full score; this intermediate draft included most of the orchestral details of the final score; this procedure, Wagner hoped, would facilitate the writing of the full score, obviating the difficulties he had encountered during the composition of "Die Walküre".