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
Sackbut between the bell stay and the bell is thought key to a resonant bell, and thus a better sackbut sound. Original instruments have a hinge joint. Modern copies with a tuning slide in the bell can need more support for operation of the slide, so either an extra stay by the tuning slide is provided or a joint without play in only one axis is employed. The original way to make the slide tubes was to roll a flat piece of metal around a solid cylinder mandrel, and the joining edges soldered together. Modern manufacturers now draw the tubes. They