Haydn Trumpet Concerto in E-flat major - 3rd Movement: Allegro on the Keyed Trumpet Markus Würsch: Klappentrompete (Keyed Trumpet) Peter Solomon: Hammerklavier (Fortepiano) The Swiss trumpet virtuoso Prof. Markus Würsch with the support of the Swiss National Fund and the Bern University of the Arts, conducted extensive research and subsequently developed a reconstruction of a 19th century keyed trumpet. https://www.hslu.ch/en/lucerne-university-of-applied-sciences-and-arts/about-us/people-finder