Assertion: natural trumpet | /r/MadeOf | single coiled tube
Facets:
value: without valves
type: OTHER
Source sentences:
text: The natural trumpets of this era consisted of a single coiled tube without valves and therefore could only produce the notes of a single overtone series.
text: The natural trumpets of this era consisted of a single coiled tube without valves and therefore could only produce the notes of a single overtone series.