Variations on a Theme of Paganini, Op. 35, is a work for piano composed in 1863 by Johannes Brahms, based on the Caprice No. 24 in A minor by Niccolò Paganini. The work consists of two books. Each book opens with the theme, Paganini’s Caprice No. 24 in A minor, followed by fourteen variations. The final variation in each section is virtuosic and climactic.

The Variations and Fugue on a Theme by Handel, Op. 24, is a work for solo piano written by Johannes Brahms in 1861. It consists of a set of twenty-five variations and a concluding fugue, all based on a theme from George Frideric Handel’s Harpsichord Suite No. 1 in B♭ major, HWV 434. They are known as his Handel Variations.

The music writer Donald Tovey has ranked it among “the half-dozen greatest sets of variations ever written”. Biographer Jan Swafford describes the Handel Variations as “perhaps the finest set of piano variations since Beethoven”, adding, “Besides a masterful unfolding of ideas concluding with an exuberant fugue with a finish designed to bring down the house, the work is quintessentially Brahms in other ways: the filler of traditional forms with fresh energy and imagination; the historical eclectic able to start off with a gallant little tune of Handel’s, Baroque ornaments and all, and integrate it seamlessly into his own voice, in a work of massive scope and dazzling variety.”