The Tonkünstler-Societät ("Society of Musicians") was a benevolent society for musicians in Vienna, which lasted from the mid 18th century to the mid 20th. Its purpose (New Grove) was "to support retired musicians and their families". Beginning in 1772, the Society mounted a series of benefit concerts, often with large forces of performers, at which were performed works by leading Classical-period composers, including Joseph Haydn, Wolfgang Amadeus Mozart, and Ludwig van Beethoven.
The Society was founded by Florian Gassmann in 1771. It was also known as the "Gesellschaft der Wiener Tonkünstler zum Unterhalte ihrer Witwen und Waisen"; i.e. "Society of Viennese Musicians for the Support of their Widows and Orphans." Until 1811 (the year that the Gesellschaft der Musikfreunde was founded), it was the only private organization offering concerts in Vienna.
The Society was strongly supported by the aristocracy (who were, along with the Church, the primary employers of musicians at the time). In her decree (23 February 1771) authorizing the founding of the Society, the empress Maria Theresa also made an initial contribution to the Society's fund in the amount of 500 ducats (about 2000 florins). Later, the diarist Karl von Zinzendorf observed that attendance at the Society's charitable concerts was considered something of a duty for members of the nobility. The Society served as a model for comparable organizations, not just in the Austrian Empire but also in Berlin (1801) and St. Petersburg (1802).
The performances of the Society were given on a schedule that remained fairly consistent across the years: two performances at Easter time, and two just before Christmas. In its earlier years, the organization was fairly adventurous, mounting performances of new or recent works. Around 1800, traditionalism set in, and the programs now emphasized music that had come to be revered, including many performances (initially led by the composer) of Haydn's two great oratorios, The Creation and The Seasons. Indeed, in 1862 the organization renamed itself after Haydn: ("Haydn", Witwen- und Waisen-Versorgungs-Verein der Tonkünstler in Wien = "Haydn: Musician's society for the care of widows and orphans in Vienna").