Johannes Brahms
Brahms was also very interested in old music and helped to edit music by François Couperin as well as the music of his friend Robert Schumann. For writing his music Brahms was mostly using German and Viennese pianos. He owned a Conrad Graf piano that he received from Clara Schumann in 1856. Later in life he was mostly playing on a Streicher piano. Brahms kept this piano in his house until his death.