Show 'em Nokia: this is how you make a ringtone

If you go to the Settings menu on your Nokia Lumia 920 or Lumia 820 and go through all the available ringtones, you'll have the pleasure to hear several tunes that aren't present on other WP8 devices. In fact, they don't come on any other smartphone on the market. These are the classical music ringtones that Nokia composed especially for its newest Windows Phone handsets, and the Bratislava Symphony Orchestra was given the task to perform them.
Has anyone heard any of Nokia's new ringtones? What do you think about them?