"circle of fifths" meaning in English

{
  "forms": [
    {
      "form": "circles of fifths",
      "tags": [
        "plural"
      ]
    }
  ],
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      "args": {
        "1": "circles of fifths"
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      "expansion": "circle of fifths (plural circles of fifths)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "cycle of fifths"
        }
      ],
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          "source": "w"
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      "examples": [
        {
          "text": "The sharp side of the circle of fifths can be read off directly from the white keys on a piano's octave (by making the appropriate jumps):\nDo–So–Re–La–Mi–Ti–Fi.\nAlso, the flat side of the circle of fifths can almost be read off entirely from the black keys on a piano's octave (with the exception of Fa):\nDo–Fa–Te–Me–Le–Ra–Se.",
          "type": "example"
        }
      ],
      "glosses": [
        "Alternative form of cycle of fifths"
      ],
      "id": "en-circle_of_fifths-en-noun-mcT-PnSB",
      "links": [
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          "cycle of fifths#English"
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      "wikipedia": [
        "circle of fifths"
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    }
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  "word": "circle of fifths"
}

{
  "forms": [
    {
      "form": "circles of fifths",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "circles of fifths"
      },
      "expansion": "circle of fifths (plural circles of fifths)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "cycle of fifths"
        }
      ],
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      "examples": [
        {
          "text": "The sharp side of the circle of fifths can be read off directly from the white keys on a piano's octave (by making the appropriate jumps):\nDo–So–Re–La–Mi–Ti–Fi.\nAlso, the flat side of the circle of fifths can almost be read off entirely from the black keys on a piano's octave (with the exception of Fa):\nDo–Fa–Te–Me–Le–Ra–Se.",
          "type": "example"
        }
      ],
      "glosses": [
        "Alternative form of cycle of fifths"
      ],
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  "word": "circle of fifths"
}