"That's Amore" (When the moon hits your eye like a big pizza pie, that's amore!) by Dean Martin is my "house music."
I had it stuck in my head for an entire cattle drive (a week) - on loop. Nothing else playing. No radio access, so no way to clear it out of my mind while cooking and washing dishes, setting up and taking down camps. Ironically, I don't know all the words, so it's mostly the first verse and chorus, over and over.
Other songs get stuck in my head for brief amounts of time, but the usual song is "That's Amore," and it pops into my head at least once a week when I'm doing something mindless. This has been happening for about fifteen years.
Ironically, I never cared one way or the other for the song - and even now, it's not that I dislike it ....It's just my default song I guess.
I honestly have no idea why!