The script is adapted from the original libretto with several scenes and lines edited or removed.

The story adheres closely to that of the original libretto, unlike the 1936 version.

Of the 22 arias identified in the original libretto, 12 are in the rescued score.

In the end, Bournonville mounted his own production based on the original libretto.

The original libretto ended with the desperate Adelia's suicide.

It is hard to think of many successful operas with original librettos.

This required, however, a translation into English of the original libretto.

The voice types which appear in this table are those listed in the original libretto.

The amplified voices, while true to the original libretto, sang in English rather than French.

Clarke's English translation hews closely to the original libretto, but some material is cut.