Joseph Joachim (1831-1907), one of the most prominent violinists of the Romantic era, was not only one of the Schumanns’ closest musical friends, but also became one of Brahms’s most important collaborators. Brahms dedicated his violin concerto to Joachim, and requested that Joachim write the first movement’s cadenza. In fact, when Brahms had first appeared at the Schumanns’ door in 1853, he had carried with him a letter of introduction and recommendation from Joachim himself.
Because they knew each other for most of their lives, Joachim’s letters prove a rich resource for descriptions of Brahms’s personality. In a letter to Gisela von Arnim (the woman Joachim wanted to marry but was never able to–but that’s another story), dated November 27, 1853, Joachim writes: