摘要："Variations" is one of the main musical forms in compositional process. Johannes Brahms is one of the most important Romantic composers that used this form. Variations and Fugue on a Theme by Handel, Op. 24, (Op. 24, 1862) is a piece that Johannes Brahms wrote for solo piano in a highly creative style, which was classically arranged. Brahms took the theme from an aria in George Frederic Handel"s Harpsichord Suite in B-flat major, HWV 434 (1733). In Handel"s work, the original theme was turned into five variations. With the purpose of exploring chromatic possibilities after the piano was developed from harpsichord, Brahms made 25 magnificent variations with an extensive fugue in his work. The purpose of this work is to prepare an explanatory document for pianists who intend to perform this piece and who are not familiar with such work. Also, it is hoped that piano performers will find explanatory points in this composition (e. g., stylistic characteristics) through comparisons with his other variations and start performing it more frequently.