 Complete the following phrase:  Even before the premiere, Ricordi was in touch with Cammarano about an alternative version, with the action removed to the Flemish- Spanish wars, under the title, Lassedio di Arlem with Federico Barbarossa...to be replaced by the Duke of Alba, etc. However, the librettist did not want to get involved and renounced his rights to the libretto 3 February 1849, but the opera was re-structured and revived in Milan 12 years later as Lassedio di Haarlem based on the historic 1572 to 1575 