Assertion: atonal piece | /r/HasAspect | minute intervallic cell
Facets:
value: often
type: TEMPORAL
Source sentences:
text: The twelve tone technique was preceded by "freely" atonal pieces of 1908–1923 which, though "free", often have as an "integrative element ... a minute intervallic cell" which in addition to expansion may be transformed as with a tone row, and in which individual notes may "function as pivotal elements, to permit overlapping statements of a basic cell or the linking of two or more basic cells".