Late Beethoven's String Quartet Melody Structure Research

Ludwig Van Beethoven composed of ten six string quartet balancedreflect the career of each period .The last five string quartet wasworksong at the last three years life which are:《String Quartet in E flatmajor》(Op127)、《String Quartet in A major》(Op132)、《String Quartet inB flat major》(Op130)、《String Quartet in C sharp minor》(Op131)、and《String Quartet in F major》(Op135).The subject of the doctoral dissertation studies on the compositiontechniques of the last five string quartet,thus summed up creationtechniques of composer in this period. The dissertation is primarilyconsisted of three chapters.the first chapter is about Beethoven’s lifeand hie compositions. The second chapter mention is The full analysisofAll movement like Music form,pitch class techniques.The third chapterwill late string quartets works as a whole to analyze their creationtechnical characteristics.In the conclusion by analyzing the five of thestring quartet patterns,Motivation and a variety of techniques theme forformal structure to the influence of summarized the main works in a latecomposer structural features.