Now the question is: is it possible to separate music - or any other aspect of our social life - from politics?
Not only is it possible, it is inevitable. The politics and ideology of an era eventually fade away, while its art remains. Perhaps in the case of the Soviet Union, not enough time has yet passed. Still, I commend to all the oft-quoted passage below:
Theories of abstract philosophy, systems of profound theology, have prevailed during one age: In a successive period, these have been universally exploded: Their absurdity has been detected: Other theories and systems have supplied their place, which again gave place to their successors: And nothing has been experienced more liable to the revolutions of chance and fashion than these pretended decisions of science. The case is not the same with the beauties of eloquence and poetry. Just expressions of passion and nature are sure, after a little time, to gain public applause, which they maintain for ever. ARISTOTLE, and PLATO, and EPICURUS, and DESCARTES, may successively yield to each other: But TERENCE and VIRGIL maintain an universal, undisputed empire over the minds of men. The abstract philosophy of CICERO has lost its credit: The vehemence of his oratory is still the object of our admiration.