Assertion: double bass | /r/HasAspect | metal machine heads
Facets:
Source sentences:
text: While the violin, viola, and cello all use friction pegs for tuning adjustments (tightening and loosening the string tension to raise or lower the string's pitch), the double bass has metal machine heads and gears.
text: While the violin, viola, and cello all use friction pegs for tuning adjustments (tightening and loosening the string tension to raise or lower the string's pitch), the double bass has metal machine heads and gears.