calcular un algoritmo para hacer mezcla de canciones musicales

#Function to normalize an array of values between a min and max value.
def normalize_array(array, array_min, array_max, desired_min, desired_max):
    for i in range(len(array)):
        array[i] = (((desired_max-desired_min)*(array[i] - array_min)) / (array_max - array_min)) + desired_min
    return array
    
#Function to add two arrays of values together.
def add_arrays(array1, array2):
    if len(array1) >= len(array2):
        longest_array = array1
        shortest_array = array2
    else:
        longest_array = array2
        shortest_array = array1
    for i in range(len(shortest_array)):
        longest_array[i] += shortest_array[i]
    return longest_array
    
#Function to add n arrays of values together.
def add_n_arrays(*args):
    longest_array = args[0]
    for