| 41. | All the courses are tuned in unison, with no octaves.
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| 42. | In the 15 years since, it has dropped an octave.
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| 43. | Consisting of all pitches separated by an integer number of octaves.
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| 44. | Her voice grew soft and crept up half an octave.
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| 45. | There are octaves and a lot of brilliant passage work.
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| 46. | And Billie Holiday had maybe one and a half octaves.
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| 47. | Dole replied, his voice an octave higher than usual.
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| 48. | I asked, each question rising an octave as my distress mounted.
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| 49. | Yes, her soprano has dropped half an octave over the years.
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| 50. | Whiz, Wham, Bam, went the famous runs and octaves.
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