Who Knows Where Or When?

There's a version of this song playing in my head that isn't the one I'm listening to. I don't even know if it's real, but there's a tenor sax or some such, and I knew the words. So I must have heard it before, but I can't remember where or when.

EDIT: It IS real! Found it on Rhapsody. Dion & The Belmonts.
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