 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. ==history== the earliest string-trio form, found in the early classical period, consisted of two violins and a cello, a grouping which had grown out of the baroque trio sonata, while later string trios more commonly are scored for violin, viola, and cello . beginning in the second half of the 18th century, although the trio configuration for two violins and cello was not wholly abandoned in classical chamber music (even during the 19th century), the scoring for violin, viola, and cello began to take precedence. joseph haydn appears to have been the first composer to use this combination , though he was soon emulated by luigi boccherini . ==list of string trios==  ===violin, viola, cello=== {| class="wikitable" |- ! scope="col" width="250" | composer ! scope="col" width="450" | composition |- valign="top" | johann georg albrechtsberger (1736â1809) ||  |- | georges aperghis || faux mouvement (1995) |- valign="top" | ludwig van beethoven||  |- | wilhelm berger (1861â1911) || string trio in g minor, op. 69 |- |lennox berkeley (1903â1989) || trio for strings, op. 19 (1944) |- | howard blake (b. 1938) || string trio, op. 199 |- |luigi boccherini || string trios, g 95â100 and g 107â112 |- |carlos chÃ¡vez (1899â1978) || invenciÃ³n ii (1965) |- | matthew davidson || music for string trio (2006) (davidson n.d.) |- valign="top" | karl ditters von dittersdorf (1739â1799) ||  |- | ernÅ dohnÃ¡nyi || serenade in c major, op. 10 |- valign="top" | [[gottfried 
Chamber_music Musical_groups_by_numbers Musical_trios Types_of_musical_groups