Assertion: trombone's use | /r/HasProperty | played on tuba
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: The use of a contrabass trombone almost always requires the addition of a fourth player to the trombone section and while in the past parts of the instrument were sometimes played on a tuba or, more recently, a bass trombone, it is nowadays considered unacceptable to use anything but a contrabass trombone to play these parts, at least in professional settings.