Assertion: double bass | /r/UsedFor | refer to the instrument's range
Facets:
Source sentences:
text: The names contrabass and double bass refer to the instrument's range and use in the contra octave below the cello, also called the 16' octave relative to the church pipe organ.
text: The names contrabass and double bass refer to the instrument's range and use one octave lower than the cello (i.e. doubling on cello).