What are the Diabelli Variations?

The Diabelli Variations, Op. 120, are a monumental set of musical variations for solo piano composed by Ludwig van Beethoven and completed in 1823.1

The work originated from a request by the music publisher Anton Diabelli, who invited various composers to write a single variation on a waltz theme he had composed in 1819. While other composers, including Franz Schubert and Franz Liszt, contributed to a collective volume, Beethoven eventually expanded his own response into a massive, independent work consisting of 33 variations.1

Beethoven transformed the simple theme through complex manipulations of dynamics, tempo, and ornamentation, incorporating parodic elements and references to other composers. The composition features a fugue at variation 32 and concludes with an elegant minuet.1