 Igor Stravinsky's "Three Pieces for String Quartet" is structured as three Russian folksongs, rather than as a classical string quartet.Stravinsky, like Bartók, used asymmetrical rhythms throughout his chamber music; the Histoire du soldat, in Stravinsky's own arrangement for clarinet, violin and piano, constantly shifts time signatures between two, three, four and five beats to the bar.In Britain, composers Ralph Vaughan Williams, William Walton and Benjamin Britten drew on English folk music for much of their chamber music