neoscore.western.key_signature_type

class neoscore.western.key_signature_type.KeySignatureType

Bases: Enum

Common key signatures.

Key signatures are specified as dicts between the 7 pitch letter names and either an AccidentalType or None. They are enumerated here in the form [pitch letter][f|s]_[major|minor]. For example:

• c major is KeySignatureType.c_major

• f-sharp minor is KeySignatureType.fs_minor

• d-flat major is KeySignature.df_major

This enum defines the entire circle of fifths - from 0 flats to 7, and 0 sharps to 7.

C_MAJOR = {'a': None, 'b': None, 'c': None, 'd': None, 'e': None, 'f': None, 'g': None}

A_MINOR = {'a': None, 'b': None, 'c': None, 'd': None, 'e': None, 'f': None, 'g': None}

DF_MAJOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': None, 'd': AccidentalType.FLAT, 'e': AccidentalType.FLAT, 'f': None, 'g': AccidentalType.FLAT}

BF_MINOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': None, 'd': AccidentalType.FLAT, 'e': AccidentalType.FLAT, 'f': None, 'g': AccidentalType.FLAT}

CS_MAJOR = {'a': AccidentalType.SHARP, 'b': AccidentalType.SHARP, 'c': AccidentalType.SHARP, 'd': AccidentalType.SHARP, 'e': AccidentalType.SHARP, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

D_MAJOR = {'a': None, 'b': None, 'c': AccidentalType.SHARP, 'd': None, 'e': None, 'f': AccidentalType.SHARP, 'g': None}

B_MINOR = {'a': None, 'b': None, 'c': AccidentalType.SHARP, 'd': None, 'e': None, 'f': AccidentalType.SHARP, 'g': None}

EF_MAJOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': None, 'd': None, 'e': AccidentalType.FLAT, 'f': None, 'g': None}

C_MINOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': None, 'd': None, 'e': AccidentalType.FLAT, 'f': None, 'g': None}

E_MAJOR = {'a': None, 'b': None, 'c': AccidentalType.SHARP, 'd': AccidentalType.SHARP, 'e': None, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

CS_MINOR = {'a': None, 'b': None, 'c': AccidentalType.SHARP, 'd': AccidentalType.SHARP, 'e': None, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

F_MAJOR = {'a': None, 'b': AccidentalType.FLAT, 'c': None, 'd': None, 'e': None, 'f': None, 'g': None}

D_MINOR = {'a': None, 'b': AccidentalType.FLAT, 'c': None, 'd': None, 'e': None, 'f': None, 'g': None}

GF_MAJOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': AccidentalType.FLAT, 'd': AccidentalType.FLAT, 'e': AccidentalType.FLAT, 'f': None, 'g': AccidentalType.FLAT}

EF_MINOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': AccidentalType.FLAT, 'd': AccidentalType.FLAT, 'e': AccidentalType.FLAT, 'f': None, 'g': AccidentalType.FLAT}

FS_MAJOR = {'a': AccidentalType.SHARP, 'b': None, 'c': AccidentalType.SHARP, 'd': AccidentalType.SHARP, 'e': AccidentalType.SHARP, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

DS_MINOR = {'a': AccidentalType.SHARP, 'b': None, 'c': AccidentalType.SHARP, 'd': AccidentalType.SHARP, 'e': AccidentalType.SHARP, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

G_MAJOR = {'a': None, 'b': None, 'c': None, 'd': None, 'e': None, 'f': AccidentalType.SHARP, 'g': None}

E_MINOR = {'a': None, 'b': None, 'c': None, 'd': None, 'e': None, 'f': AccidentalType.SHARP, 'g': None}

AF_MAJOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': None, 'd': AccidentalType.FLAT, 'e': AccidentalType.FLAT, 'f': None, 'g': None}

F_MINOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': None, 'd': AccidentalType.FLAT, 'e': AccidentalType.FLAT, 'f': None, 'g': None}

A_MAJOR = {'a': None, 'b': None, 'c': AccidentalType.SHARP, 'd': None, 'e': None, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

FS_MINOR = {'a': None, 'b': None, 'c': AccidentalType.SHARP, 'd': None, 'e': None, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

BF_MAJOR = {'a': None, 'b': AccidentalType.FLAT, 'c': None, 'd': None, 'e': AccidentalType.FLAT, 'f': None, 'g': None}

G_MINOR = {'a': None, 'b': AccidentalType.FLAT, 'c': None, 'd': None, 'e': AccidentalType.FLAT, 'f': None, 'g': None}

B_MAJOR = {'a': AccidentalType.SHARP, 'b': None, 'c': AccidentalType.SHARP, 'd': AccidentalType.SHARP, 'e': None, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

GS_MINOR = {'a': AccidentalType.SHARP, 'b': None, 'c': AccidentalType.SHARP, 'd': AccidentalType.SHARP, 'e': None, 'f': AccidentalType.SHARP, 'g': AccidentalType.SHARP}

CF_MAJOR = {'a': AccidentalType.FLAT, 'b': AccidentalType.FLAT, 'c': AccidentalType.FLAT, 'd': AccidentalType.FLAT, 'e': AccidentalType.FLAT, 'f': AccidentalType.FLAT, 'g': AccidentalType.FLAT}