String quartet movements with a large-scale structure similar to that of a symphony: Substantial modifications to the typical structure were already achieved in Beethoven's later quartets, and despite some notable examples to the contrary, composers writing in the twentieth century increasingly abandoned this structure. Many other chamber groups can be seen as modifications of the string quartet: Further expansions have also been produced such as the String octet by Mendelssohn. Notably, Schoenberg included a soprano in the last two movements of his second string quartet, composed in 1908. This instrumentation of adding a voice is succeeded by Hindemith , Finzi, Respighi, Ginastera,
Walden String Quartet the United States. The quartet remained there until it disbanded in the late 1970s. In 1949, the quartet was selected by the civil affairs division of the U.S. war department to tour Austria and Germany, as well as Brussels, Amsterdam, Paris, and finally London, where they performed Quartet No.2 by Wallingford Riegger and Charles Ives's Second String Quartet. The group premiered many 20th Century works including Elliott Carter's String Quartet No. 1, which was dedicated to them. Walden String Quartet The Walden String Quartet was a chamber music ensemble formed in 1934 by members of the Cleveland Orchestra. It was