import PyHarmonize

# Create dictionary with parameters
parameters = {'input_filename':'./guitar_distorted_E_major_ex1.wav', # input audio is in the key of E major
              'output_filename':'./guitar_distorted_E_major_ex1_with_harmony.wav',
              'key':'E',
              'mode':'major'}

# Generate instance of the class harmony_generator
harmony_generator = PyHarmonize.harmony_generator(parameters=parameters)

# Add harmony
# Note that scale_degrees = [3] means we add one melody line,
# which is always three notes higher within the scale. Depending on the note
# played, "three notes higher within the scale" is either 3 or 4 semitones up.
output_dictionary = harmony_generator.add_harmonies(scale_degrees = [3])

import PyHarmonize

# Create dictionary with parameters
parameters = {'input_filename':'./guitar_distorted_E_major_ex2.wav', # input audio is in the key of E major
              'output_filename':'./guitar_distorted_E_major_ex2_with_harmony.wav',
              'key':'E',
              'mode':'major'}

# Generate instance of the class harmony_generator
harmony_generator = PyHarmonize.harmony_generator(parameters=parameters)

# Add harmony
output_dictionary = harmony_generator.add_harmonies(scale_degrees = [3, 5]) # add third and fifth

import PyHarmonize

# Create dictionary with parameters
parameters = {'input_filename':'./guitar_clean_A_major.wav', # input audio is in the key of A major
              'output_filename':'./guitar_clean_A_major_with_harmony.wav',
              'key':'A',
              'mode':'major'}

# Generate instance of the class harmony_generator
harmony_generator = PyHarmonize.harmony_generator(parameters=parameters)

# Add harmony
output_dictionary = harmony_generator.add_harmonies(scale_degrees = [3,5,8])
# The list
#       scale_degrees = [3, 5, 8]
# means that we add four melody lines:
# 1. a third up
# 2. a fifth up
# 3. one octave up

>> git clone https://github.com/juliankappler/PyHarmonize.git
>> cd PyHarmonize
>> pip install -r requirements.txt
>> python setup.py install