Find all scales names that are a subset of the given one (has less notes but all from the given scale)
a list of scale names
reduced("major") // => ["ionian pentatonic", "major pentatonic", "ritusen"] Copy
reduced("major") // => ["ionian pentatonic", "major pentatonic", "ritusen"]
Find all scales names that are a subset of the given one (has less notes but all from the given scale)