オクターブ表記は国際式。

kimigayo.js

var song = [
  {
    key: 'c',
    bpm: 120,
    frequency: 440,
    time: '4/4',
    notes: [
      [
        {
          number: 'D4',
          length: 1
        },
        {
          number: 'C4',
          length: 1
        },
        {
          number: 'C4',
          length: 1
        },
        {
          number: 'E4',
          length: 1
        },
      ],
      [
        {
          number: 'G4',
          length: 1
        },
        {
          number: 'E4',
          length: 1
        },
        {
          number: 'D4',
          length: 2
        },
      ],
      [
        {
          number: 'E4',
          length: 1
        },
        {
          number: 'G4',
          length: 1
        },
        {
          number: 'A4',
          length: 1
        },
        {
          number: 'G4',
          length: 0.5
        },
        {
          number: 'A4',
          length: 0.5
        },
      ],
      [
        {
          number: 'D5',
          length: 1
        },
        {
          number: 'B4',
          length: 1
        },
        {
          number: 'A4',
          length: 1
        },
        {
          number: 'G4',
          length: 1
        },
      ],
      [
        {
          number: 'E4',
          length: 1
        },
        {
          number: 'G4',
          length: 1
        },
        {
          number: 'A4',
          length: 2
        },
      ],
      [
        {
          number: 'D5',
          length: 1
        },
        {
          number: 'C5',
          length: 1
        },
        {
          number: 'D5',
          length: 2
        },
      ],
      [
        {
          number: 'E4',
          length: 1
        },
        {
          number: 'G4',
          length: 1
        },
        {
          number: 'A4',
          length: 1
        },
        {
          number: 'G4',
          length: 1
        },
      ],
      [
        {
          number: 'E4',
          length: 1.5
        },
        {
          number: 'G4',
          length: 0.5
        },
        {
          number: 'D4',
          length: 2
        }
      ],
      [
        {
          number: 'A4',
          length: 1
        },
        {
          number: 'C5',
          length: 1
        },
        {
          number: 'D5',
          length: 2
        }
      ],
      [
        {
          number: 'C5',
          length: 1
        },
        {
          number: 'D5',
          length: 1
        },
        {
          number: 'A4',
          length: 1
        },
        {
          number: 'G4',
          length: 1
        }
      ],
      [
        {
          number: 'A4',
          length: 1
        },
        {
          number: 'G4',
          length: 0.5
        },
        {
          number: 'E4',
          length: 0.5
        },
        {
          number: 'D4',
          length: 2
        }
      ]
    ]
  }
];