Is it normal that i cry upon hearing the survivor theme song?

Yes, really. If I hear the Survivor theme song I well up and cry. Hard. It didn't used to happen but somewhere around 5 years ago it just started out of nowhere and to avoid embarrassment I quit watching the show. I tried watching again to see if this weirdness had gone away but no such luck.

I am not an emotional person or a cryer in general, infact I typically cry only once every 2 years average and only when something huge affects me. This is really weird to me. I don't have any bad associations with the show. This has also *almost* happened with a couple other songs on the radio, I felt myself choking up when the songs began but got control of myself quickly. I don't remember what the songs were, it was 2 or 3 different ones.

Does this happen to anyone else? Is there an explanation? Thank you for reading!