Assertion: trombone's note | /r/CreatedBy | the instrument
Facets:
Source sentences:
text: It also has a slide, like most trombones, which is extended to change the note produced by the instrument.
text: Only one of the parts of a trombone can alter the note produced by the instrument, and that part is the slide.
text: Players move the second brace to alter the note produced by the instrument.
text: Some contrabass trombones have two slides, stacked one on top of the other, which are both used to alter the note produced by the instrument.