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,
Vaghy String Quartet and Avery Fisher Hall as well as many others halls, and on radio (such as CBC Radio) and television. The quartet also performed live and on recording throughout Europe, as well as at the 1976 Summer Olympics, premiering several works. Their repertoire included Bartók, Shostakovich, Szymanowski, Ravel, and Janáček, among other 20th-century composers. The quartet premiered several works as well: John Fodi's Quartet for Strings 'Ch'ien' and Paul Crawford's String Quartet: 'La nuit étoilée' in 1974; James Montgomery's Reconnaissance in 1975; Graham George's Fuguing Music for String Quartet, James Kent's Cadenza String Quartet, and Norman Sherman's Quadron in 1976; William