Piano Sonata No. 14 (Beethoven)

Piano Sonata No. 14
Sonata quasi una fantasia
by Ludwig van Beethoven
Title page of the first edition of the score, published on 2 August 1802 in Vienna by Giovanni Cappi e Comp[a]
Other nameMoonlight Sonata
KeyC minor, D major (second movement)
Opus27/2
StyleClassical-Romantic (transitional)
FormPiano sonata
Composed1801
DedicationCountess Giulietta Guicciardi
Published1802
PublisherGiovanni Cappi
Duration15 minutes
Movements3
Audio samples
I. Adagio sostenuto (6:00)
II. Allegretto (2:06)
III. Presto agitato (6:56)
Played by Bernd Krueger on a digital piano, recorded MIDI

The Piano Sonata No. 14 in C-sharp minor, marked Quasi una fantasia, Op. 27, No. 2, is a piano sonata by Ludwig van Beethoven, completed in 1801 and dedicated in 1802 to his pupil Countess Julie "Giulietta" Guicciardi.[b] Although known throughout the world as the Moonlight Sonata (German: Mondscheinsonate), it was not Beethoven who named it so. The name grew popular later, likely long after Beethoven's death.

The piece is one of Beethoven's most famous compositions for the piano, and was quite popular even in his own day.[1] Beethoven wrote the Moonlight Sonata around the age of 30, after he had finished with some commissioned work; there is no evidence that he was commissioned to write this sonata.[1]


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  1. ^ a b Cite error: The named reference Jones was invoked but never defined (see the help page).