Barbier invented a pretty situation to bring in the passage _Bonheur est chose legere_, but that wasn't enough.

Barbier and Carre racked their brains without finding any solution of the difficulty, for on the stage as elsewhere there are problems that can't be solved.
Between times they tried to find a dancer of the first rank.

Finally, they found one who had recently left the Opera, although still at the height of her beauty and talent.

And they continued to seek a way to make the part of Helene worthy of Madame Carvalho.
The famous director had one mania.

He wanted to collaborate in every work he staged.