Assertion: sonata allegro | /r/HasProperty | well-implied background form
Facets:
value: in his work
type: LOCATION
Source sentences:
text: In his work, the sonata-allegro was a well-implied 'background form' against whose various detailed features composers could compose their individual 'foregrounds'; the 'meaningful contradiction' of expected background by unexpected foreground was seen as generating the expressive content.