Assertion: oboe | /r/HasProperty | de poitou
Facets:
Source sentences:
text: The hautbois de Poitou was a primitive oboe with the reed placed in a bulb, forming an air-chamber, having a raised slit at the top through which the performer breathed in compressed air; as the reed could not be controlled by the lips, it was impossible to play with expression on the hautbois de Poitou or to obtain the harmonic octaves; the compass was therefore limited.