| 21. | More recent revisions to the libretto have been by Olwen Wymark.
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| 22. | This was not the end of the libretto's career.
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| 23. | The second was a new opera to BogusBawski's libretto.
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| 24. | Kien also wrote the libretto to Decca in Leipzig in 1990.
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| 25. | The libretto is by Giulio Cicognini with revisions by Giulio Strozzi.
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| 26. | The libretto for this work was created by poet Niloufar Talebi.
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| 27. | As an opera librettist, Bailey wrote librettos for four works.
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| 28. | He offered the libretto to Franz Liszt who also declined it.
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| 29. | Haas completed his work on the libretto on 1 July 1934.
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| 30. | The libretto is based on the composer's original story.
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