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| note equivalent in duration to four quarter notes |
| chord of three tones, one consisting of a given tone with its major or minor third augmented |
diapason
(from Greek dia pason chordon: "through all the strings"), in medieval music, the interval, or distance between notes, encompassing all degrees of the scale-i.e., the octave. In French, diapason indicates the range of a voice and is also the word for a tuning fork and for pitch
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