Choose the word most similar in meaning to the word 'libretto', as used in the passage.

Directions: Read the following passage carefully and select the most suitable answer according to the underlined word per corresponding number in the passage.

There is hardly a composer concerning whom so many erroneous notions are current as concerning Chopin, and of all the histories of music I have seen that of Langhans is the only one which devotes to Chopin an amount of space approximately proportionate to his importance. One of the most absurd of the misconceptions is that Chopin's genius was born in full armor, and that it did not pass through several stages of development, like that of other composers. Chopin did display remarkable originality at the very beginning, but the apparent maturity of his first published works is due to the fact that he destroyed his earliest efforts and disowned those works which are known as posthumous, and which may have created confusion in some minds by having received a higher "opus" number than his last works.
Another misconception regarding Chopin is that his latest works are morbid and unintelligible. The same charge was brought by philistines against the best works of Beethoven, Schumann, and Wagner. The fact is that these last works are of an almost matchless harmonic depth and originality, as superior to his earlier works as Wagner's last music dramas are to his first operas. I make this comparison with Wagner advisedly because, although I have the most exalted notions of Wagner's grandeur and importance, I do not for a moment hesitate to say that in his own sphere Chopin is quite as original and has been almost as revolutionary and epoch-making as Wagner. Now, why has the world been so slow in recognizing that Chopin stands in the very front rank of creative musicians? One reason doubtless is that he was so quiet and retiring in his personal disposition. His still, small voice was lost in the din of musical warfare. He warmly defended the principles of the romantic school, if necessary, and had decided opinions of other musicians, especially of the popular pianists of his day who vitiated the public taste with their show pieces; but he generally kept them to himself or confided them only to his friends, whom he even occasionally implored to keep them secret. Had he, like Richard Wagner, attacked everybody, right and left, who stood in the way of the general recognition of his genius, his cause would have doubtless assumed greater prominence in the eyes of the public, even though the parlor piano does not afford so much play-ground for warfare as the operatic stage.

Even Schumann, and Elsner, Chopin's teacher, seem to have been affected a little by this irrational way of looking at music. Schumann, in a complimentary notice of Chopin's nocturnes, expresses his regrets that the composer should confine himself so strictly to the pianoforte, whereas he might have influenced the development of music in all its branches. He adds, however, on second thought, that "to be a poet one need not have written ponderous volumes; one or two poems suffice to make a reputation, and Chopin has written such." Elsner who was unusually liberal in his views of art, and who discovered and valued his pupil's originality long before Schumann did, nevertheless bowed before the fetish of Jumboism in so far as to write to Chopin in Paris that he was anxious, before he departed this Vale of Tears, to hear an opera from his pen, both for his benefit, and for the glory of his country. Chopin took this admonition to heart sufficiently to ask a friend to prepare for him a libretto; but that is as far as the project ever went. Chopin must have felt instinctively that his individual style of miniature painting would be as ineffective on the operatic stage, where bold, al fresco painting is required, as his soft and dreamy playing would have been had he taken his piano from the parlor and placed it in a meadow.