It's just a song many of you will not understand..
... though the Frisian(Northern part of the Netherlands where I'm from) language is so much older than the Dutch language...and of all the languages in this world most connected to (old) English. Can you imagine that?
If I speak Frisian to you , you probably will understand some context, but a 15th century Brit I would have a nice conversation with. (The Spanish influence in the colonial age spoiled everything)
Lekker Sliipe/Sleep Well
Cheers
Robin