Languages you've probably never heard
A couple of points about this one: I have stood on the very spot where the performers are standing, in Independence Square in Kiev. And while this is obviously pop music, it's also a patriotic song (what sounds like "oo-kra-yee-na" is how the name of the country is pronounced in Ukrainian) -- in eastern Europe there's no felt contradiction between pop culture and patriotism.
This commemorates the great mass protests of 2009 in Iran. Tehrân Jang-e means "Tehran is at war".
These languages have something in common -- they all belong to the Indo-European family, as English does, which means they are related to English. However, except in the case of Afrikaans, the relationship is not very close, and it would take some knowledge of linguistics to notice the similarities.
Finally, a language which may sound almost equally foreign, but actually is not -- this is a sample of English as spoken almost a thousand years ago, before the Norman conquest of England: