Wolfgang Amadeus Mozart and Joseph Haydn

The composers Wolfgang Amadeus Mozart and Joseph Haydn were friends. Their relationship is not very well-documented, but the evidence that they enjoyed each other's company and greatly respected each other's work is strong, and suggests that the elder Haydn acted in at least a minor capacity as a mentor to Mozart.

Haydn was already a fairly well-known young composer in Mozart's childhood. His six string quartets Opus 20 (1772), called the "Sun" Quartets from the drawing of the sun on the cover of the first edition, were widely circulated and are conjectured (for instance, by Charles Rosen) to have been the inspiration for the six early string quartets K. 168–173 the 17-year-old Mozart wrote during a 1773 visit to Vienna.

The two composers, a generation apart, met in Vienna around Christmas of 1783 at a performance sponsored by the Vienna Tonkünstler-Societät, a charitable organization for musicians. On the program were works by both Haydn (Jones: "a symphony and a chorus, both probably from [the oratorio] Il ritorno di Tobia") and Mozart ("a new concert aria, probably 'Misero! o sogno!' [K. 431], and, on the first night, a piano concerto").

After sensing a great kinship of spirit, they moved quickly across the concentric circles of platonic relationships and arrived at the center of a deep friendship. Having already admired Haydn for years and even considered him his teacher, Mozart composed six string quartets dedicated to his friend and hero.

Haydn last saw Mozart in the days before he departed for London in December 1790.  Haydn, still in London a year later when the news of Mozart's death reached him, was distraught; he wrote to their mutual friend Michael Puchberg, "For some time I was quite beside myself over his death, and could not believe that Providence should so quickly have called away an irreplaceable man into the next world". Haydn wrote to Constanze Mozart offering musical instruction to her son when he reached the appropriate age, and later followed through on his offer.


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