Assertion: trombone's use | /r/HasProperty | common
Facets:
value: in public-school settings.[citation
type: LOCATION
Source sentences:
text: Additionally, the valve trombone came around the 1850s shortly after the invention of valves, and was in common use in Italy and Austria in the second half of the century.
text: A typical concert band trombone section consists of two tenor trombones and one bass trombone, but using multiple players per part is common practice, especially in public-school settings.[citation needed]