Striking is the polyphonic nature of the orchestral part and the continuous modulating. One expects a piece in e minor of that age to stay in nearby keys but this one doesn't, it is all over the place. Not to mention the violin solo, I am not a violinist so can hardly judge but it looks just as virtuosic as much later concerto's by Brahms, Bruch etc. Certainly a very appealing work, a shame it is not performed more often.