"In the evening, we played Robert's Quartet in E flat for the first time at home, and I was once again charmed by this beautiful work, so youthful." This is how Clara Schumann expressed her enthusiasm in 1842. To prepare, Schumann had studied the string quartets of Viennese classics. All parts of the quartet are thus balanced, according to a marked style of chamber music, interpenetrate and form a magnificent whole. Due to the complexity of the sources, our Urtext edition is accompanied by a detailed critical commentary. In the form of a leaflet, the cello part is particularly practical. The Quartet for piano and strings and the Quintet for piano and strings op. 44, characterized as "sister works", were composed by Schumann in his year "chamber music". Reason why we published at the same time in 2006, the Schumann year, the two works.