Mozart – Requiem (secret completion)

The eccentric count Franz von Walsegg commissioned the Requiem from Mozart anonymously through intermediaries. The count, an amateur chamber musician who routinely commissioned works by composers and passed them off as his own, wanted a Requiem Mass he could claim he composed to memorialize the recent passing of his wife. Mozart received only half of the payment in advance, so upon his death his widow Constanze was keen to have the work completed secretly by someone else, submit it to the count as having been completed by Mozart and collect the final payment. Joseph von Eybler was one of the first composers to be asked to complete the score, and had worked on the movements from the Dies irae up until the Lacrimosa. In addition, a striking similarity between the openings of the Domine Jesu Christe movements in the requiems of the two composers suggests that Eybler at least looked at later sections. Following this work, he felt unable to complete the remainder, and gave the manuscript back to Constanze Mozart.

The task was then given to another composer, Franz Xaver Süssmayr. Süssmayr borrowed some of Eybler’s work in making his completion, and added his own orchestration to the movements from the Kyrie onward, completed the Lacrimosa, and added several new movements which a Requiem would normally comprise: Sanctus, Benedictus, and Agnus Dei. He then added a final section, Lux aeterna by adapting the opening two movements which Mozart had written to the different words which finish the Requiem Mass, which according to both Süssmayr and Mozart’s wife was done according to Mozart’s directions. Whether or not that is true, some people consider it unlikely that Mozart would have repeated the opening two sections if he had survived to finish the work completely.

Other composers may have helped Süssmayr. The Agnus Dei is suspected by some scholars to have been based on instruction or sketches from Mozart because of its similarity to a section from the Gloria of a previous Mass by Mozart, as was first pointed out by Richard Maunder. Others have pointed out that in the beginning of the Agnus Dei the choral bass quotes the main theme from the Introitus. Many of the arguments[citation needed] dealing with this matter, though, center on the perception that if part of the work is high quality, it must have been written by Mozart (or from sketches), and if part of the work contains errors and faults, it must have been all Süssmayr’s doing. A frequent meta-debate is whether or not this is a fair way to judge the authorship of the parts of the work.

Another controversy is the suggestion that Mozart left explicit instructions for the completion of the Requiem on “little scraps of paper.” It is commonly believed this claim was made by Constanze Mozart after it was public knowledge that the Requiem was actually completed by Süssmayr as a way to increase the impression of authenticity.

The completed score, initially by Mozart but largely finished by Süssmayr, was then dispatched to Count Walsegg complete with a counterfeited signature of Mozart and dated 1792. The various complete and incomplete manuscripts eventually turned up in the 19th century, but many of the figures involved did not leave unambiguous statements on record as to how they were involved in the affair. Despite the controversy over how much of the music is actually Mozart’s, the commonly performed Süssmayr version has become widely accepted by the public. This acceptance is quite strong, even when alternate completions provide logical and compelling solutions for the work. A completion dating from 1819 by Sigismund Neukomm has been recorded under the baton of Jean-Claude Malgoire. Salzburg-born Neukomm, a student of Joseph Haydn, provided a concluding Libera me, Domine for a performance of the Requiem on the feast of St Cecilia in Rio de Janeiro at the behest of Nunes Garcia.

The confusion surrounding the circumstances of the Requiem’s composition was created in a large part by Mozart’s wife, Constanze. Constanze had a difficult task in front of her. She had to keep secret the fact that the Requiem was unfinished at Mozart’s death, so she could collect the final payment from the commission. For a period of time, she also needed to keep secret the fact that Süssmayr had anything to do with the composition of the Requiem at all in order to allow Count Walsegg the impression that Mozart wrote the work entirely himself. Once she received the commission, she needed to carefully promote the work as Mozart’s so she could continue to receive revenue from the work’s publication and performance. During this phase of the Requiem’s history, it was still important that the public accept that Mozart wrote the whole piece, as it would fetch larger sums from publishers and the public if it were completely by Mozart.

It is Constanze’s efforts that created the flurry of half-truths and myths almost instantly after Mozart’s death. According to Constanze, Mozart declared that he was composing the Requiem for himself, and that he had been poisoned. His symptoms worsened, and he began to complain about the painful swelling of his body and high fever. Nevertheless, Mozart continued his work on the Requiem, and even on the last day of his life, he was explaining to his assistant how he intended to finish the Requiem. Source materials written soon after Mozart’s death contain serious discrepancies which leave a level of subjectivity when assembling the “facts” about Mozart’s composition of the Requiem.
(wikipedia)

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