–“Alien Covenant – Why Does This Movie Exist?”
https://www.youtube.com/watch?v=YO0TUESAL5Y

Huxley Bob says, check it out.

See, the idea is that the latest luckless “Alien” space crew, in this case sent out to colonize some planet somewhere in the galaxy, gets awakened from hypersleep by a solar flare, then after they catch their breath, they pick up a radio transmission of “Country Roads” from a nearby planet and decide, “Hey, waitaminnit, that’s a much better planet to colonize” and scrap their original mission.

Of course, it’s a nightmare planet inhabited by prequel versions of the hideous “Alien” xenomorph predator.

But it’s really cute that they get lured in by a John Denver song.

–“Alien: Covenant Take Me Home Trailer Official”
https://www.youtube.com/watch?v=pAkp4zIxBJo

https://tinyurl.com/nhbv4trz

Then it is satisfactorily fitting that his “ode to home” is a hit in his ancestral homeland!

As to nostalgia, I’d go with some subliminal connections. Something reminds you of something you don’t quite recall which reminds you of something you miss but you don’t consciously recall the actual thing. But you get a “feeling” for a few moments.
Some of my errands take me out to the “country”, at least with lots of trees and homes some hundreds of yards apart. From time to time, a well-kept home possibly up a slight grade, set back, sparks a very mild sense of….possibly nostalgia. No idea what I’m missing or what the possible connections to it might be.

That’s my take. My childhood home was the mountains of Colorado. I don’t live there now for reasons I don’t want to go into. But my heart is still in the mountains of Colorado. The first John Denver song I remember hearing was Colrado, Rocky Mountain High. Yep, I was on board.

German for “longing for home” is “Heimweh.” Maybe, “home ache” would be a good translation, or “Home pain.”

Weirder than Germans singing “Country Roads” in English is Bobby Darrin singing, “Die Moritat von Mackie Messer” in English. 😉
https://youtu.be/X7eO7MKEZAY