I think an entr'acte was written... I've seen three regional productions of Evita, and one of them did the opening bars of "Don't Cry for Me Argentina" and then went into a little drum, strings, piano diddy and then into "Buenos Aires"-esque entr'acte. The other shows did not include entr'actes.
And if she'll say, "My darling, I'm yours!" I'll throw away my striped tie and my best pressed tweed, all I really need is the girl...