 Its CD version included nine bonus arias of Haydn's, mostly written to be inserted into other composers' works, performed by Mathis and the Orchestre de Chambre de Lausanne under the direction of Armin Jordan.At the time when the album was taped, no complete autograph score of the opera was known to exist.There were fragmentary autographs in collections in Berlin, Budapest, Cracow and Paris, and scholars had also found three contemporary copies - one, lacking Act 3, in Brussels, and two, complete, in Brno and Vienna.