Assertion: celesta | /r/HasProperty | invented by auguste mustel
Facets:
value: in 1866
type: TEMPORAL
Source sentences:
text: A celesta (also known as a celeste) is a keyboard instrument in the form of a small upright piano, and was invented by Auguste Mustel in 1866; metal plates suspended over resonating boxes are struck by hammers and sustained after the manner of the piano action.