It's 'O SOLE MIO, guys!

[gemini_artemis]

I am SHOCKED and APPALLED that so many people are failing to recognize this song! Romano would be so disappointed! B| I mean, it's a super famous Neapolitan song, and everyone and their cat has recorded a version of it, even Elvis Presley! Heck, it's practically Italy's unofficial anthem. XD

Here's one of the millions of versions in Neapolitan:

Click to view