Beethoven, Piano Sonata No. 14 in C-sharp minor, Op. 27 (Moonlight), II. Allegretto (0:41)

“Allegretto” is the second movement of Ludwig van Beethoven’s Piano Sonata No. 14 in C-sharp minor, Op. 27, commonly known as Moonlight Sonata. The piece is one of Beethoven's most popular compositions for the piano.