Assertion: concerto | /r/HasProperty | demanding
Facets:
value: often
type: DEGREE
value: for the soloist
type: PURPOSE
value: extremely
type: DEGREE
Source sentences:
text: Concertos are often extremely demanding for the soloist, but the most difficult part of all may be the cadenza, when the orchestra drops out completely, leaving the soloist to dazzle the audience with a set of flourishes, often completely original, right before a movement ends.