Par MOZART WOLFGANG AMADEUS. Credo and Sanctus, reconstructed and completed by Helmut Eder. Mozart began work on this ambitious setting of the Mass text in 1782 and there has been much speculation as to the reasons why it was abandoned unfinished. This edition based on the Urtext New Mozart Edition has the Credo and Sanctus, reconstructed and completed by Helmut Eder. - Vocal score for sale (BA4846-90) - Study score for sale (TP255) - Performance material for hire (BA4846-72) - Full score, hardback, containing Mozart 's incomplete score (BA4592-01)/ Répertoire / Partition de Poche