Assertion: diatonic harmonica | /r/HasAspect | 12 keys of music
Facets:
value: usually
type: TEMPORAL
Source sentences:
text: Usually, the 10-hole major diatonic harmonicas come with 12 keys of music, and you can play all the 7 note major scale.
text: The standard 10-hole major diatonic harmonicas come in all 12 keys of music and allow you to play a complete 7-note major scale of the key of the harmonica.