Assertion: clavichord | /r/HasAspect | key
Facets:
value: with two black keys
type: OTHER
value: in genere diatonico
type: LOCATION
Source sentences:
text: Despite the uncertainty regarding the eschiquier, it seems probable that the clavichord was the earliest stringed instrument having keys that could be pushed down by the fingers.
text: We are told by him that the earliest clavichords had only twenty keys, in genere diatonico, with two black keys (B♭), so there were not more than three semitones in an octave