A number of Joachim's composer colleagues, including Schumann, Brahms, Bruch, and Dvořák, composed concerti with Joachim in mind, many of which entered the standard repertory. Nevertheless, Joachim's solo repertoire remained relatively restricted. He never performed Schumann's Violin Concerto in D minor, which Schumann wrote especially for him, or Dvořák's Violin Concerto in A minor, although Dvořák had earnestly solicited his advice about the piece, dedicated it to him, and would have liked him to premiere it. The most unusual work written for Joachim was the "F-A-E Sonata", a collaboration between Schumann, Brahms, and Albert Dietrich, based upon the initials of Joachim's motto, "Frei aber Einsam" (which can be translated as "free but lonely", "free but alone", or "free but solitary"). Although the sonata is rarely performed in its entirety, the third movement, the "Scherzo in C minor", composed by Brahms, is still frequently played today.