In 1849, Schumann turned to a new genre: the composition of piano works accompanied by a solo instrument. Almost systematically, he gave a gift of Fantasiestücken, Romanzen, etc. to the different wind instruments - and always anticipates a variant with a stringed instrument. Thus, according to his wish, the Adagio and Allegro op. 70 also exists in a piano and cello version. Clara played the new work, accompanied by horn player E. Julius Schlitterlau, then reporting in her diary: "The work is superb, fresh and passionate, as I love them so much!" Enthusiastic, Schumann also proclaimed "there to have had a lot of fun, "which is why many musicians still join him today. ?