What song plays in your head when you are happy?

For me it’s this one . Although, the version I have in my brain is not by Beyonce. Weird huh? Just wanted to add that I know this has sorta been asked before but I don’t wanna know which songs MAKE you happy.. I wanna know when you are already happy and a song comes to your head.. what is it? A technicality .. I know. HA!