Tar-Palantir and the Valar

[akhtene]

no theme may be played that hath not it's uttermost sourse in me, nor can any alter the music in my despite. (Eru to Melkor)

It was Eru's initial design that Elves and men dwell in M-E. But the Valar took first most of elves and then the best of Men away from it. Well, the revolt of Feanor and the downfall of numenorians, apart from many grievances they caused, returned the best representatives of both races - the daring Noldor and the most educated and loyal of the race of Men - back to where they were intended to live. And those people / or their descendants contributed a lot to final defeat of Morgoth and Sauron.
The Music couldn't be edited.