Symphony No. 81 in G major (Hoboken I/81) is a symphony by Joseph Haydn composed in 1784 as part of a trio of symphonies that also included symphonies 79 and 80.These three symphonies were specially written for performance in March 1785.[1]
^H. C. Robbins Landon, Haydn: Chronicle and Works, 5 vols, (Bloomington and London: Indiana University Press, 1976– ) v. 2: "Haydn at Eszterhaza, 1766–1790", [page needed].