<P> There were attempts all over Europe around the mid-classical era to expand the range of the trumpet using valves, but Weidinger's idea of drilling holes and covering them with flute - like keys was not a success as it had very poor sound quality . Thus the natural trumpet still had continual use in the classical orchestra while the keyed trumpet had barely any repertoire . The valved trumpets used today were first constructed and used in the 1830s . </P> <P> The work is composed in three movements (typical of a Classical period concerto), they are marked as followed: </P> <Ul> <Li> I. Allegro (sonata) </Li> <Li> II . Andante (A-B-A) </Li> <Li> III . Allegro (rondo) </Li> </Ul> <Li> I. Allegro (sonata) </Li>

Haydn trumpet concerto in e flat wynton marsalis