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
Experimental musical instrument available sizes are played by a small but growing number of professional clarinettists in Canada, the US, Germany and Estonia, with two more sizes under consideration. Starting in 2006, Ice Music Festival celebrates musical instruments made of ice. In 2010, composer Alexis Kirke and technologist Tim Hodgson turned the University of Plymouth's Roland Levinsky Building into a form of musical instrument to be played by the rising sun, as part of Peninsula Arts Contemporary Music Festival. Light sensors were placed across seven floors of the building and fed by radio network into a computer music instrument analogous to a Mellotron.