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
Piano quintet scored for piano, oboe, clarinet, horn, and bassoon. Not until the middle of the 19th century did Robert Schumann's Piano Quintet in E major, Op. 44 (1842) firmly establish music for piano and string quartet as a significant, and quintessentially Romantic, chamber music genre. By 1842, the string quartet had evolved into the most important chamber music ensemble, and advances in the design of the piano had expanded its power and dynamic range. Bringing the piano and string quartet together, Schumann's Piano Quintet took full advantage of the expressive possibilities of these forces in combination, alternating conversational passages between the