Assertion: piccolo's size | /r/HasProperty | developed in 20th century
Facets:
Source sentences:
text: The lowest sizes (larger than the bass flute) have all been developed in the 20th century; these include the sub-bass flute, which is pitched in F, between the bass and contrabass; subcontrabass flute (pitched in G or C), contra-alto flute (pitched in G, one octave below the alto), and double contrabass flute in C, one octave lower than the contrabass.