Answer: octaves

AnswerCrossword Clue
OCTAVESParts of sonnets
octavesOCTAVE, a type of musical interval
octavestone on the eighth degree from a given musical tone
octavesthe interval between such tones
OCTAVESScales span them
OCTAVESRange divisions
OCTAVESRange components
OCTAVESNoted series
OCTAVESA piano has seven of them
OCTAVESMusical series
OCTAVESStaff sizes?
OCTAVESSome exercises
OCTAVESTwelve-half-step intervals
OCTAVESSingers often have two
OCTAVESHarmonic combinations
OCTAVESSonnet sections
OCTAVESPiano notes
OCTAVESGroups of eight.
OCTAVESIntervals in music.
OCTAVESStanzas of eight lines.
OCTAVESScale ranges
OCTAVESB to B, etc.
OCTAVESEight-line verses
OCTAVESMusical intervals