The Schumanns first met violinist Joseph Joachim in November 1844, when he was 14 years old. A year later, Clara Schumann wrote in her diary that in a concert on 11 November 1845, "little Joachim was very much liked. He played a new violin concerto by Felix Mendelssohn, which is said to be wonderful." In May 1853, they heard Joachim play the solo part in Beethoven's Violin Concerto. She wrote that he played "with a finish, a depth of poetic feeling, his whole soul in every note, so ideally, that I have never heard violin-playing like it, and I can truly say that I have never received so indelible an impression from any virtuoso." A lasting friendship developed between Clara and Joseph, which for more than forty years never failed her in things great or small, never wavered in its loyalty.