String trio String trio A string trio is a group of three string instruments or a piece written for such a group. The term is generally used with reference to works of chamber music from the Classical period to the present. From at least the 19th century on, the term "string trio" with otherwise unspecified instrumentation normally refers to the combination violin, viola and cello (cf "string quartet", "piano trio" etc.). This is how the term is used by major catalogs, including IMSLP. The earliest string-trio form, found in the early Classical period, consisted of two violins and a cello, a grouping
String Quartet No. 20 (Mozart) King Frederick William II of Prussia (the first edition bore no dedication, however), is often polyphonic in a way uncharacteristic of the earlier part of the classical music era. The menuetto and its trio give good examples of this in brief, with the brief irregular near-canon between first violin and viola in the second half of the main portion of the minuet, and the double imitations (between the violins, and between the viola and cello) going on in the trio. String Quartet No. 20 (Mozart) The String Quartet in D major, K. 499, was written in 1786 in Vienna by