<s>[INST] def calculate_frequency(musical_notes):
    """
    This function calculates the frequency of each note in a given list of musical notes.
    
    Parameters:
    musical_notes (list): A list of musical notes. Each note is represented as a string in the format 'note_name-octave', e.g., 'A-4'.
    
    Returns:
    dict: A dictionary where the keys are the musical notes and the values are their corresponding frequencies.
    """[/INST]