Answer
At the 1853 Lower Rhine Music Festival, violinist Joseph Joachim met composer Johannes Brahms and pianist Clara Schumann. Joachim was a student of Schumann's, and Brahms was an admirer of Schumann's work. Joachim and Brahms became close friends and musical collaborators, and Joachim helped to promote Brahms's music. Joachim and Clara Schumann also became friends, and Clara Schumann often played Brahms's compositions in her concerts.