Safe Haskell	Safe
Language	Haskell98

Music.Theory.Key

Description

Common music keys.

Synopsis

Documentation

Enumeration of common music notation modes.

Constructors

Minor_Mode
Major_Mode

Instances

Eq Mode_T Source #
Methods (==) :: Mode_T -> Mode_T -> Bool # (/=) :: Mode_T -> Mode_T -> Bool #
Ord Mode_T Source #
Methods compare :: Mode_T -> Mode_T -> Ordering # (<) :: Mode_T -> Mode_T -> Bool # (<=) :: Mode_T -> Mode_T -> Bool # (>) :: Mode_T -> Mode_T -> Bool # (>=) :: Mode_T -> Mode_T -> Bool # max :: Mode_T -> Mode_T -> Mode_T # min :: Mode_T -> Mode_T -> Mode_T #
Show Mode_T Source #
Methods showsPrec :: Int -> Mode_T -> ShowS # show :: Mode_T -> String # showList :: [Mode_T] -> ShowS #

A common music notation key is a Note_T, Alteration_T, Mode_T triple.

Distance along circle of fifths path of indicated Key. A positive number indicates the number of sharps, a negative number the number of flats.

key_fifths (A,Natural,Minor_Mode) == 0
key_fifths (A,Natural,Major_Mode) == 3
key_fifths (C,Natural,Minor_Mode) == -3