Assertion: piece | /r/HasAspect | single author
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Although a musical composition often uses musical notation and has a single author, this is not always the case.
text: Although a musical composition often uses musical notation and has a single author, this is not always the case.
text: Although a musical composition often uses musical notation and has a single author, this is not always the case.
text: Although a musical composition often has a single author, this is not always the case.