What is not true about Brahms' the third movement, "Rondo," in Violin Concerto in D major?

The statement regarding Brahms' "Rondo" from the Violin Concerto in D major being one of the few rondos that actually had an allegro form is not true. In this context, the term "rondo" usually refers to a musical structure characterized by a recurring theme in alternation with varied sections. While classical rondos may indeed exhibit a lively tempo, Brahms' "Rondo" does not strictly adhere to the allegro form throughout, as it contains contrasting sections that reflect varied tempos and moods, rather than a continuous fast pace.

The movement is celebrated for its lyrical melodies, which highlight the expressive capabilities of the violin, showcasing its emotional depth. The presence of a slow introduction is another distinctive feature of this movement, as it's relatively uncommon to find such an introduction in a rondo form. Ultimately, Brahms blends these elements to create a unique character for the "Rondo," moving beyond a simple classification or expectation of the rondo form.