Which composer wrote the operas "Elektra" (1909), "Der Rosenkavalier" (1911) and "Intermezzo" (1924)?

Explanation

Richard Georg Strauss (1864-1949) was a German composer and conductor. His works include the operas "Salome" (1905), "Elektra" (1909), "Der Rosenkavalier" (1911) and "Intermezzo" (1924). His most popular orchestral compositions are "Also Sprach Zarathrustra" (1896) and "Don Quixote" (1898), based on the novel by Miguel de Cervantes.