Ludwig van Beethoven (16 December 1770 – 26 March 1827) was a German composer and pianist. He was a crucial figure in the transitional period between the Classical and Romantic eras in Western classical music, and remains one of the most respected and influential composers of all time.

Beethoven played viola in various orchestras, becoming friends with other players such as Antoine Reicha, Nikolaus Simrock, and Franz Ries, and began taking on composition commissions. As a member of the court chapel orchestra, he was able to travel some and meet members of the nobility, one of whom, Count Ferdinand Waldstein, would become a great friend and patron to him. Beethoven moved to Vienna in 1792 to study with Haydn; despite the prickliness of their relationship, Haydn's concise humor helped form Beethoven's style. Haydn composer, who gave lessons to Beethoven of 1792 to 1794, date on which goes back to London.Haydn taught Beethoven the counterpoint.
The relationship between the two men was very variable, but Beethoven finally remained very attached to Haydn.

Beethoven's epochal career is often divided into early, middle, and late periods, represented, respectively, by works based on Classic-period models, by revolutionary pieces that expanded the vocabulary of music, and by compositions written in a unique, highly personal musical language incorporating elements of contrapuntal and variation writing while approaching large-scale forms with complete freedom. Though certainly subject to debate, these divisions point to the immense depth and multifariousness of Beethoven's creative personality. Beethoven profoundly transformed every genre he touched, and the music of the nineteenth century seems to grow from his compositions as if from a chrysalis.

Beethoven died in Vienna on March 26, 1827.