Assertion: bass's note | /r/HasProperty | the tonic
Facets:
value: often
type: TEMPORAL
Source sentences:
text: The timpani (or kettledrums) also play a role in orchestral basslines, albeit confined in 17th and early 18th century works to a few notes, often the tonic and the dominant below it.
text: Some songs lend themselves to another type of variation: the pedal point, in which the bassist holds or repeats a single note (often the tonic or the dominant) under the chord changes.