def example2():
print('----- Debug meaning of modal index change and hct -----')
# example tonality with modal index
# Create a harmonic minor tonality of some basis root which as Mixolydian has F as the root.
# The answer is Bb-HarmonicMinor F(4)
source_expression = '{<C-Major: I> iC:4}'
t_shift = TShift.create(source_expression)
print('Shift examples based on:')
print_line(t_shift.source_line)
print()
print('Shift to modal index 4 (Mixolydian)')
# This makes C the Mixolydian of F-Major
target_line, target_hct = t_shift.apply(modal_index=4)
print_line(target_line)
print_hct(target_hct)
print()
# if you wanted G Mixolydian based on C
print('Shift as if moving to modal index 4 (Mixolydian) in C')
target_line, target_hct = t_shift.apply(
root_shift_interval=TonalInterval.parse('P:5'), modal_index=4)
print_line(target_line)
print_hct(target_hct)
print()
def shift_change_modal_index_modality_and_shift():
print('----- Shift Change Modal Index, modality, shift Example -----')
source_expression = '{<C-Major: I> iC:4 C qD E <:IV> iF G hA <:V> ig b qf g <:VI> ie e qd ic d <:i> h@c}'
t_shift = TShift.create(source_expression)
print('Shift examples based on:')
print_line(t_shift.source_line)
print()
print('Shift to modal index 1 (dorian)')
target_line, target_hct = t_shift.apply(root_shift_interval=TonalInterval.parse('M:2'), modal_index=1)
print_line(target_line)
print_hct(target_hct)
print()
t_shift = TShift(target_line, target_hct)
print('Shift P:4 to modal index 2 (phrygian) of MelodicMinor')
target_line, target_hct = t_shift.apply(root_shift_interval=TonalInterval.parse('P:4'),
range_modality_type=ModalityType.MelodicMinor, modal_index=2)
print_line(target_line)
print_hct(target_hct)
print()
def shift_details_on_secondary_chord():
print('----- Book example of shifted secondary tonality (Figure 15.6) -----')
source_expression = '{<C-Major: V/iii> iD#:4 F# G A qD#:5 B:4}'
t_shift = TShift.create(source_expression, TonalInterval.parse('M:3'))
target_line, target_hct = t_shift.apply(range_modality_type=ModalityType.MelodicMinor)
print(t_shift.source_hct)
print(target_line)
print(target_hct)
def tonality_mode_change():
print('----- Book example of shifted tonality on modal not 0 (Figure 15.5) -----')
source_expression = '{<D-Major(1): I> iE:4 F# G A qE B}'
t_shift = TShift.create(source_expression,
TonalInterval.parse('P:4'))
target_line, target_hct = t_shift.apply(range_modality_type=ModalityType.MelodicMinor, modal_index=2)
print(t_shift.source_hct)
print(target_line)
print(target_hct)
def simple_shift_example():
print('----- Simple Shift Example -----')
source_expression = '{<C-Major: I> iC:4 C qD E <:IV> iF G hA <:V> ig b qf g <:VI> ie e qd ic d <:I> h@c}'
t_shift = TShift.create(source_expression, TonalInterval.parse('M:3'))
print('Shift examples based on:')
print_line(t_shift.source_line)
print()
print('Shift up M:3 (Figure 15.8)')
target_line, target_hct = t_shift.apply()
print_line(target_line)
print_hct(target_hct)
print()
t_shift = TShift.create(source_expression, TonalInterval.parse('-m:2'))
target_line, target_hct = t_shift.apply()
print('Shift down m:2 (Figure 15.9)')
print_line(target_line)
print_hct(target_hct)
print()
def shift_modulating_sequence_example():
print('----- Shift sequence standard example (Figure 15.14) -----')
source_expression = '{<C-Major: IV> sf:4 a b C:5 <:V/ii> sa:4 e:5 tc# b:4 sC#:5 <:ii> sd tc a:4 sb:4 a}'
lge = LineGrammarExecutor()
source_instance_line, source_instance_hct = lge.parse(source_expression)
print_score('\n[0]: ', source_instance_line, source_instance_hct)
t_shift = TShift.create(source_expression)
target_line, target_hct = t_shift.apply(root_shift_interval=TonalInterval.parse('M:2'),
range_modality_type=ModalityType.Major)
print_score('\n[1]: ', target_line, target_hct)
t_shift = TShift(target_line, target_hct)
target_line, target_hct = t_shift.apply(root_shift_interval=TonalInterval.parse('M:2'),
range_modality_type=ModalityType.Major)
print_score('\n[2]: ', target_line, target_hct)
def shift_change_modal_index():
print('----- Shift Change Modal Index Example -----')
source_expression = '{<C-Major: I> iC:4 C qD E <:IV> iF G hA <:V> ig b qf g <:VI> ie e qd ic d <:i> h@c}'
t_shift = TShift.create(source_expression)
print('Shift examples based on:')
print_line(t_shift.source_line)
print()
print('Shift to modal index 4 (Mixolydian) (Figure 15.12)')
target_line, target_hct = t_shift.apply(modal_index=4)
print_line(target_line)
print_hct(target_hct)
print()
print('Shift to C as modal index 3 (lydian) on a melodic minor scale (G)')
target_line, target_hct = t_shift.apply(range_modality_type=ModalityType.MelodicMinor, modal_index=3)
print_line(target_line)
print_hct(target_hct)
print()
def shift_change_modality():
print('----- Shift Change Modality Example -----')
source_expression = '{<C-Major: I> iC:4 C qD E <:IV> iF G hA <:V> ig b qf g <:VI> ie e qd ic d <:i> h@c}'
t_shift = TShift.create(source_expression, TonalInterval.parse('P:4'))
print('Shift examples based on:')
print_line(t_shift.source_line)
print()
print('Shift up P:4, modality MelodicMinor (Figure 5.10)')
target_line, target_hct = t_shift.apply(range_modality_type=ModalityType.MelodicMinor)
print_line(target_line)
print_hct(target_hct)
print()
print('Shift up P:4, modality NaturalMinor (Figure 15.11)')
target_line, target_hct = t_shift.apply(range_modality_type=ModalityType.NaturalMinor)
print_line(target_line)
print_hct(target_hct)
print()
def shift_sequence_tonal_example():
print('----- Shift sequence tonal example -----')
source_expression = '{<C-Major: IV> qf:4 a b C:5 <:V/ii> a:4 e:5 id C# <:ii> qd c b:4 a}'
lge = LineGrammarExecutor()
source_instance_line, source_instance_hct = lge.parse(source_expression)
print_score('\n[0]: ', source_instance_line, source_instance_hct)
t_shift = TShift.create(source_expression)
target_line, target_hct = t_shift.apply(root_shift_interval=TonalInterval.parse('M:2'),
range_modality_type=ModalityType.MelodicMinor)
print(target_line)
print(target_hct)
print()
t_shift = TShift(target_line, target_hct)
target_line, target_hct = t_shift.apply(root_shift_interval=TonalInterval.parse('M:2'),
range_modality_type=ModalityType.MelodicMinor)
print(target_line)
print(target_hct)
print()