Thank you Neal, for providing those links, and for putting to rest my puzzlement, on this anyway.
Your version of La Valse Du Vieux Temps is just like my version after I slowed it down. The one I started with was a lot faster, and sounds more like Cleoma than Amedée. So now I wonder if it was from the person digitilizing the record who played it at the wrong speed, or the company putting it out changing the speed to fit it onto available space. I dont know the source of the version I have.
And now about Iry Lejeune's "It Happened To Me", exact opposite this time. It is a version of "Grand Bosco" with slightly different words and, at least on my version, sounds too slow, like it is dragging. When I speed it up it sounds closer to "Grand Bosco". I think I got this one off of the cassette.
I wonder, in the case of "Grand Bosco" and "It Happened To Me", if one wasn't an alternate take of another. After all, if it was, Iry would have only gotten paid for the one song. But then again, I believe one of them came out after he was dead.
I did speed up "It Happened To Me" and it the pitch and the speed prety much matches "Grand Bosco", which is why I'd question if they were both cut at the same session.