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,
Philadelphia String Quartet by Violist Radhames Santos. A new web site has been made: Philadelphia String Quartet Philadelphia String Quartet The Philadelphia String Quartet was an American string quartet started in Philadelphia, Pennsylvania. The string quartet was started in 1959-60 by four members of the Philadelphia Orchestra, who later broke off from the orchestra and accepted residency in Washington. Alan Iglitzin, the founding violist of the quartet, later went on to found the Olympic Music Festival near Quilcene, Washington. The original founding members of the Philadelphia String Quartet were Alan Iglitzin (viola), Irwin Eisenberg (second violin), Charles Brennand (cello), and Veda Reynolds (first