I haven't seen it, but I discover this is the original french version of
"Singing in the Rain"
I'm sure it was not that great, although some great names took part in this: Claude Berry, Serge Reggiani, Edith Piaf, Yves Montand.
what floors me is that the first critiques in imdb says:
It's "singing in the rain" revisited ...
Can't you guys learn about history for a change ???