@staticmethod
def _get_chord_names(notation):
    """Return a list of chord names, given the user option."""
    if notation == 'alphascale':
        return ['A', 'B', 'C', 'D', 'E', 'F', 'G']
    if notation == 'solfedge':
        return ['La', 'Si', 'Do', "R\\'e", 'Mi', 'Fa', 'Sol']
    return notation
