[davem]

Originally Posted by burrahobbit

Where did you get the idea that Men alter the Music?

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Therefore he willed that the hearts of Men should seek beyond the world and should find no rest therein; but they should have a virtue to shape their life, amid the powers and chances of the world, beyond the Music of the Ainur, which is as fate to all things else; and of their operation everything should be, in form and deed, completed, and the world fulfilled unto the last and smallest.(Ainulindale)

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But Illuvatar knew that Men, being set amid the turmoils of the powers of the world, would stray often, and would not use their gifts in harmony; and ie said, These too in their time shall find that all that they do redounds at the end only to the glory of my work.' Yet the Elves believe that Men are often a grief to Manwe, who knows most of the mind of Illuvatar; for it seems to the Elves that Men resemble Melkor most of all the Ainur, although he has ever feared and hated them, even those that served him.
It is one with this gift of freedom that the children of Men dwell only a short space in the world alive, and are not bound to it, and depart soon whither the Elves know not. (Of the Beginning of Days)

Quod erat demonstrandum?