Giuseppe Verdi's Requiem was first performed in the San Marco church in Milan to commemorate the first anniversary of Alessandro Manzoni's death.

Giuseppe Fortunino Francesco Verdi was an Italian composer best known for his operas. He was born near Busseto, a small town in the province of Parma, to a family of moderate means, receiving a musical education with the help of a local patron, Antonio Barezzi. Verdi came to dominate the Italian opera scene after the era of Gioachino Rossini, Vincenzo Bellini, and Gaetano Donizetti, whose works significantly influenced him.

The Messa da Requiem is a musical setting of the Catholic funeral mass (Requiem) for four soloists, double choir and orchestra by Giuseppe Verdi. It was composed in memory of Alessandro Manzoni, whom Verdi admired, and therefore also referred to as the Manzoni Requiem. The first performance, at the San Marco church in Milan on 22 May 1874, conducted by the composer, marked the first anniversary of Manzoni's death. It was followed three days later by the same performers at La Scala. Verdi conducted his work at major venues in Europe.

San Marco is a church in Milan, northern Italy.

Alessandro Francesco Tommaso Antonio Manzoni was an Italian poet, novelist and philosopher.