{
  "title": "Bb major",
  "formula": "1 2 3 4 5 6 7",
  "notes": [
    "Bb",
    "C",
    "D",
    "Eb",
    "F",
    "G",
    "A"
  ],
  "variants": [
    {
      "label": "Middle register",
      "midi": [
        58,
        60,
        62,
        63,
        65,
        67,
        69,
        70
      ],
      "arpeggio": true
    },
    {
      "label": "Upper register",
      "midi": [
        70,
        72,
        74,
        75,
        77,
        79,
        81,
        82
      ],
      "arpeggio": true
    }
  ],
  "license": "CC-BY-4.0",
  "attribution": "Artistry Piano",
  "source": "https://artistryalliance.net/scales/bb-major/"
}