I think you may have misheard the lyrics. It's "donzer lee lights". Obviously, "donzerly" is not a word, but all lee lights are donzer.

Oh, it makes so much more sense now.

Implicitly, I suppose that makes the lights on the windward side blitzen.

Ok, I found the German imposter right here.

Oh no! Damn you, Gene Autry!

The general don zerlyite was an important figure in the defense of Ft McHenrry

dawn's early light :-)