 80 in D minor, Hoboken 1/80, is a symphony composed by Joseph Haydn in 1784 as part of a trio of symphonies that also included symphonies 79 and 81.This symphony, along with the one that follows it, and the one that precedes it, were not written for Prince Nikolaus, but for a Lenten concert performed in Vienna in March 1785.It is one of the relatively few later symphonies by Haydn to begin in the minor mode.