Ages ago just before WWII, there was a young medical student in Riga, Latvia who had a passion for the violin. Nothing wrong there however he played very badly and thought he was very good. When the occupation of Latvia came and the Russians moved in people began fleeing the country.
The medical student made sure to bring his violin with him. In the DP or Displaced Person camps in Germany a humorous story began circulating about how they could have kept the Russians out of Latvia. Simply by having this medical student stand on the border between Latvia and Russia and play his violin. The horrid sounds would keep everyone away.