Sackbut as ballet "Don Juan" (1761). Some chamber music in this period includes trombone in an obligato role with voice, and also as a concerto instrument with string orchestra. Composers include the likes of Leopold Mozart, Georg Christoph Wagenseil, Johann Albrechtsberger, Michael Haydn and Johann Ernst Eberlin. For works for trombone post-1800, please see trombone. Many groups specializing in period music make frequent and prominent use of the sackbut. External links: Plenty of recordings of the authentic sackbut are now available from the groups such as Concerto Palatino, HMSC, Gabrieli Consort and the Toulouse Sacqueboutiers. For a closer examination of the
Berlin Musical Instrument Museum Hotteterre. Curt Sachs, Director from 1919-1933, brought a scientific approach to the collections. He was one of the founders of modern organology (the study of musical instruments) and co-authored the Sachs-Hornbostel system of instrument classification. The Museum rose to international importance and his catalogs form the basis of academic research papers to this day. When the Nazis seized power in 1933, Sachs was dismissed from his post by the Nazi Party and forced to emigrate because he was Jewish. In 1935, the musical instrument collection was removed from the Academy to the new National Institute for German Music Research headed