Assertion: accordion's bellow | /r/HasProperty | expanded
Facets:
Source sentences:
text: The diatonic button accordion is bisonoric, meaning when a button is pressed, the note sounded changes depending on whether the bellows are being expanded or contracted.
text: The bellows are expanded and contracted by the accordionist, which creates vacuum and pressure and drives air through the reed chambers to create sound.
text: The diatonic button accordion is bisonoric, meaning when a button is pressed, the note sounded changes depending on whether the bellows are being expanded or contracted.
text: Some pieces of music for the accordion have specific notation regarding whether the bellows are to be expanded or contracted during a certain measure.
text: The garmons can be of two major classes: unisonoric, meaning that each button plays the same note or chord when the bellows is being expanded as it does when compressed, and bisonoric, in which the note depends on the direction of the bellowswork.