def __init__(self, music=None, context_name="Voice", name=None):
Context.__init__(self, music=music)
self._initialize_keyword_values(context_name=context_name, name=name)
def __init__(self, music=None, context_name='StaffGroup', name=None):
Context.__init__(self, music=music)
self.is_simultaneous = True
self._initialize_keyword_values(context_name=context_name, name=name)
