# Convert a degree into a note

``

    degree  degree (symbol_or_number), tonic (symbol), scale (symbol)

For a given scale and tonic it takes a symbol/string/number and resolves it to a midi note. The degree can be either a decimal number or a roman numeral (if it’s a string or symbol), and may optionally be prefixed an augmentation (`a`/`d` for an augmented/diminished interval, `aa`/`dd` for double augmented/diminished or `p` for a perfect (unchanged) interval).

Introduced in v2.1

## Examples

# Example 1
``
    play degree(:iii, :D3, :major)
    play degree(3, :C3, :minor)
    play degree('d5', :B3, :major)
| ``
    # major third up from :D3
    # minor third up from :C3
    # diminished fifth up from :B3
# Example 2
``
    chrd = []
    [:i, :iii, :v, :dvii, :dix, :Axi, :xiii].each do |d|
      chrd.append (degree d, :Fs, :major)
    end
    play chrd
| ``
    # for each degree in the chord
    # add the corresponding note

    # play an F# 13+11-9 chord, using roman numeral symbols
# Example 3
``
    chrd = []
    ['1', '3', '5', 'd7', 'd9', 'A11', '13'].each do |d|
      chrd.append (degree d, :Fs, :major)
    end
    play chrd
| ``
    # the same chord as above, but using decimal number strings