Wolfgang Amadeus Mozart was born in Salzburg, Austria, on January 27, 1756, and died in Vienna, Austria, on December 5, 1791. The Requiem is scored for solo soprano, alto, tenor, and bass, mixed chorus, two basset horns, two bassoons, two trumpets, three trombones, timpani, organ and strings. Approximate performance time is forty-eight minutes.

In the early summer of 1791, Mozart received a visit at his Vienna home from “an unknown messenger.” This individual, acting on behalf of another who wished to remain anonymous, requested Mozart to compose a Requiem Mass. According to Mozart’s early biographer, Franz Xaver Niemetschek, the messenger cautioned the composer not to try “to find out who had given the order, as it would assuredly be in vain.” A few months later, Mozart received another visit from the messenger, who “appeared like a ghost,” and inquired about the status of the commission.

As Mozart’s physical condition deteriorated, he desperately attempted to complete the Requiem. In fact, Mozart continued to work on the Requiem until almost the very moment of his death. The horrible irony of the situation was not lost upon the composer. On more than one occasion, Mozart remarked that he was writing his own Requiem. When Mozart died, just a few minutes before 1 a.m. on December 5, 1791, the Requiem was unfinished. Wolfgang Amadeus Mozart was 35 years old.

Over time, much of the Requiem’s mystery has been replaced by fact. We now know that the “unknown messenger” was representing Count Franz Walsegg, a nobleman who resided in Lower Austria. Count Walsegg was an amateur musician who played both the flute and cello. One of the Count’s hobbies was to commission, anonymously, works by various prominent composers, and then try to pass the music off as his own. The Count’s wife died on February 14, 1791. It is quite possible that Walsegg commissioned the Requiem from Mozart with the intention of presenting it on the first anniversary of her passing.

The image of Mozart—deathly ill, and racing against time to complete the Requiem—certainly makes for a compelling story. In the case of Peter Shaffer’s Amadeus (1979), it even makes for compelling theater. But in truth, during a considerable portion of the time Mozart was involved in the creation of the Requiem, he was in reasonably good health and spirits.

However, by the middle or end of October, Mozart began to feel ill. Mozart was convinced that he had been poisoned. He told Constanze: “I know I must die…someone has given me acqua toffana and has calculated the precise time of my death—for which they have ordered a Requiem, it is for myself I am writing this.” Constanze, fearful that the Requiem was the cause of her husband’s morbid thoughts, convinced him to put the work aside.

A few weeks later, Mozart told Constanze: “Yes I see I was ill to have had such an absurd idea of having taken poison, give me back the Requiem and I will go on with it.” But on November 20, Mozart became stricken with the illness (perhaps, rheumatic fever) that would kill him in a few weeks’ time.

Nevertheless, Mozart continued his work on the Requiem. Shortly before his passing, Mozart spoke with his student, Franz Xaver Süssmayr, concerning the completion of the Requiem. Constanze’s younger sister, Sophie, recalled that when she rushed back to the house, she found Mozart speaking to Süssmayr, “explaining to him how he thought he should finish it after his death…The last thing he did was to try to mouth the sound of the timpani in his Requiem; I can still hear it now.”

Constanze’s final conversation with her husband occurred when she tried to reassure Mozart that his physician had offered an optimistic diagnosis. Mozart responded: “It isn’t true. I shall die, now when I am able to take care of you and the children. Ah, now I will leave you unprovided for.” And with those words, Mozart was gone.

After Mozart’s death, Constanze ultimately entrusted Süssmayr with the task of completing the Requiem. Debate continues as to the precise contributions of Mozart and Süssmayr to the finished Requiem. But in any event, Süssmayr’s efforts allowed Constanze to receive the remainder of Count Walsegg’s commission fee. On December 14, 1793, Count Walsegg presented the Requiem in Wiener-Neustadt. The subsequent revelation of Mozart’s authorship of the work caused him no small embarrassment.

By the very nature of its creation, Mozart’s Requiem has inspired considerable debate—not to mention several performing editions (these concerts feature a 1993 completion by the American pianist and musicologist Robert D. Levin). And while it is fascinating to speculate on what Mozart might have accomplished with the Requiem had he been given more time, what remains is a work of haunting eloquence, beauty, and power. Perhaps it is only fitting that a sublime genius, taken far too soon, bequeathed as his valedictory statement a glorious work that, nonetheless, leaves us yearning for more.

English translation by Ken Meltzer

Program notes by Ken Meltzer