Assertion: orchestra's role | /r/HasProperty | defined
Facets:
value: clearly
type: MANNER
Source sentences:
text: This format is popular with new bands, as there are only two instruments that need tuning, the melody and chords formula prevalent with their material is easy to learn, four members are commonplace to work with, the roles are clearly defined and generally are: instrumental melody line, rhythm section which plays the chords or countermelody, and vocals on top.[citation needed]