54, MWV U 156, is a composition for solo piano by Felix Mendelssohn consisting of a theme in D minor and 17 variations.
The work was written as part of a campaign to raise funds for the erection of a large bronze statue of Ludwig van Beethoven in his home town of Bonn.
[2] (Schumann's Fantasie in C was the final result of a work originally intended for the same purpose).
Mendelssohn is known to have written three sets of piano variations, but only this one was published during his lifetime.
Mendelssohn's good friend Ignaz Moscheles stated "I play the Variations sérieuses again and again, each time I enjoy the beauty again."