In the game 'Metal Gear Solid V: The Phantom Pain' the player is able to encounter several Soviet Red Army outposts (game is set during the Soviet invasion of afghanistan in the 80's), with most of those outposts having cassette players, which constantly play iconic western tunes from the time. Is this historically accurate? How available was western music in the USSR and in the other Warsaw pact nations?
In the early days of rock and roll, Soviet music fans created bootleg copies of smuggled rock records on discarded X-ray film. They were known as "bone records."
As time went on some Western music was made officially available in the USSR and Eastern Bloc countries - though nothing too politically charged or sexually explicit, of course. Melodiya, the Soviet record label, signed a deal with one Western record company (CBS, I think) for Soviet rights to their recordings in exchange for Western rights to Melodiya's enviable classical music catalogue.
In the seventies and eighties, some big-name Western acts were allowed to perform in the USSR and its satellite states - including Queen in Hungary in 1986, and Bruce Springsteen in East Berlin in 1988. (A recent BBC radio documentary about the East German punk scene has more info.)
Even music that wasn't approved by the censors could be smuggled into the country with relative ease once cassettes became available, and then copies of copies of copies were widely traded.
And then there's the fascinating case of Dean Reed, the "Red Elvis," an American singer who became a Communist, moved to East Germany and performed all over the Eastern Bloc. He took his own life in the mid-eighties - resulting in many conspiracy theories (implicating both sides in the Cold War).