The Razumovsky Quartets are a set of three string quartets composed by Ludwig van Beethoven between 1805 and 1806. They are known as Op. 59, and were commissioned by the Russian ambassador to Vienna, Count Andreas Razumovsky. These quartets mark a significant development in Beethoven's style, showcasing his innovative approach to harmony and structure. Each quartet features unique themes and complex interactions among the instruments, reflecting Beethoven's deep understanding of the string quartet form. The first two quartets, in particular, incorporate Russian themes, paying homage to their patron. The Razumovsky Quartets are considered essential works in the chamber music repertoire.