 In January 1855 Wagner proceeded to compose the full score without bothering to write an intermediate instrumentation draft as he had done for "Das Rheingold".This was a decision he was soon to regret, as numerous interruptions made the task of orchestrating the "Gesamtentwurf" an exceedingly difficult one.If he allowed too much time to elapse between the initial drafting of a passage and its later elaboration, he found that he could not remember how he had intended to orchestrate the draft.