The Piano Sonata No. 14 in C-sharp minor, “Quasi una fantasia”, Op. 27, No. 2, popularly known as the Moonlight Sonata, is a piano sonata by Ludwig van Beethoven, who is reputed to have been the greatest composer who ever lived. Beethoven wrote the Moonlight Sonata in his early thirties.
It was completed in 1801 and dedicated in 1802 to his pupil, Countess Giulietta Guicciardi, with whom Beethoven is said to have been deeply in love. The countess’ family was against it; Beethoven, as a piano teacher, was too far beneath the family’s social station.
This piece is one of Beethoven’s most popular compositions, and it was a popular favorite even in his own day.
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