The Fantasia was first performed at the "Akademie" of 22 December 1808, a benefit concert which also saw the premieres of the Fifth and Sixth Symphonies and the Fourth Piano Concerto as well as a performance of excerpts of the Mass in C major. To conclude this memorable concert program, Beethoven wanted a "brilliant Finale" that would unite in a single piece the different musical elements highlighted in the concert night: piano solo, mixed chorus and orchestra. The Fantasia, Op. 80, written shortly prior, was thus composed expressly to fulfil this role. Beethoven himself played the piano part and the opening solo offers an example of his improvisational style (at the premiere he did, in fact, improvise this section).