Assertion: harmonica's key | /r/HasProperty | played
Facets:
value: in using one instrument
type: OTHER
Source sentences:
text: When the keys are played upon, the hammers press the tongues upward, bringing them in connection with a metallic point like that of any telegraphic instrument.
text: Because a chromatic harmonica can produce chromatic-scale notes like piano keys, all keys can be played in using one instrument.