Assertion: orchestra's role | /r/HasProperty | compose music on demand
Facets:
value: on demand
type: MANNER
Source sentences:
text: By the time of J.S. Bach and George Frideric Handel (late 17th to mid-18th century), the role of key musician was not only to compose music on demand but to conduct it as well, usually from the composer-performer’s chair at the organ or harpsichord.