Assertion: bass clarinet's pitch | /r/CreatedBy | selmer paris
Facets:
value: for a brief period
type: TEMPORAL
Source sentences:
text: For a brief period starting in the late 1970s, a bass clarinet with Boehm style keywork and pitched in A (and keyed to low E♭, even though the original parts seldom descend below written low E) was again produced by Selmer Paris.