I just did a few google searches...and I'm horrified to find that the most universally recognized song outside the US appears to be
...Probably not what you're looking for, though.
Then I went back to check on popular culture in general, and it seems that it's pretty much...
Note that I was specifically searching for American pop culture around the world...and that was in the top 10, at least twice, for pretty much every country I checked. Oh, the irony.
"Not this again!" Minerva said. "Albus, it was You-Know-Who, not you, who marked Harry as his equal. There is no possible way that the prophecy could be talking about you!" - Harry Potter and the Method of Rationality, Chapter 84
...Probably not what you're looking for, though.
Then I went back to check on popular culture in general, and it seems that it's pretty much...
Note that I was specifically searching for American pop culture around the world...and that was in the top 10, at least twice, for pretty much every country I checked. Oh, the irony.
"Not this again!" Minerva said. "Albus, it was You-Know-Who, not you, who marked Harry as his equal. There is no possible way that the prophecy could be talking about you!" - Harry Potter and the Method of Rationality, Chapter 84