Assertion: trombone | /r/ObjectUse | used as a solo instrument
Facets:
Source sentences:
text: The trombone may be used as a solo instrument or provide harmony.
text: Trombones were used at times in the Baroque Period in works by composers such as Johann Sebastian Bach and George Frideric Handel, but the trombone was first used as a solo instrument in the concertos of the Austrian composers Johann Georg Albrechtsberger, Leopold Mozart and Johann Michael Haydn, the brother of Joseph Haydn.